diff --git a/mocks/hdr.lua b/mocks/hdr.lua
index d27e386..5a3104c 100644
--- a/mocks/hdr.lua
+++ b/mocks/hdr.lua
@@ -33,7 +33,7 @@ local hdrMock = {
         crit = logging.FATAL
     }
 }
-    function hdrMock.new()
+    function hdrMock:new()
         local t = {}
 
         t.__class__ = 'hdrMock'
diff --git a/mocks/ksr.lua b/mocks/ksr.lua
index bade5b8..43ac64b 100644
--- a/mocks/ksr.lua
+++ b/mocks/ksr.lua
@@ -39,14 +39,14 @@ local ksrMock = {
     }
 }
 local ksrMock_MT = { __index = ksrMock, __newindex = lemock.controller():mock() }
-    function ksrMock.new()
+    function ksrMock:new()
         local t = {}
         if os.getenv('RESULTS') then
             local file = os.getenv('RESULTS').."/"..logfile
             t._logger = log_file(file, "%Y-%m-%d")
         end
-        t.hdr = hdrMock.new()
-        t.pv = pvMock.new(t.hdr)
+        t.hdr = hdrMock:new()
+        t.pv = pvMock:new(t.hdr)
             function t.log(level, message)
                 if not t._logger_levels[level] then
                     error(string.format("level %s unknown", tostring(level)))
@@ -71,7 +71,7 @@ local ksrMock_MT = { __index = ksrMock, __newindex = lemock.controller():mock()
             function t.crit(message)
                 t._logger:log(logging.FATAL, message)
             end
-        t.pvx = pvxMock.new(t.pv)
+        t.pvx = pvxMock:new(t.pv)
         setmetatable(t, ksrMock_MT)
         return t
     end
diff --git a/mocks/pv.lua b/mocks/pv.lua
index 55ef7d3..66c730d 100644
--- a/mocks/pv.lua
+++ b/mocks/pv.lua
@@ -35,7 +35,7 @@ local pvMock = {
         crit = logging.FATAL
     }
 }
-    function pvMock.new(hdr)
+    function pvMock:new(hdr)
         local t = {}
 
         t.__class__ = 'pvMock'
diff --git a/mocks/pvx.lua b/mocks/pvx.lua
index 3971c0a..34bc73c 100644
--- a/mocks/pvx.lua
+++ b/mocks/pvx.lua
@@ -32,7 +32,7 @@ local pvxMock = {
         crit = logging.FATAL
     }
 }
-    function pvxMock.new(pv)
+    function pvxMock:new(pv)
         local t = {}
 
         t.__class__ = 'pvxMock'
diff --git a/ngcp/api_client.lua b/ngcp/api_client.lua
index 02ce039..84bf4f3 100644
--- a/ngcp/api_client.lua
+++ b/ngcp/api_client.lua
@@ -41,7 +41,7 @@ NGCPAPIClient_MT.__tostring = function (t)
     return string.format("config:%s", utable.tostring(t.config))
 end
 
-function NGCPAPIClient.new(config)
+function NGCPAPIClient:new(config)
     local t = NGCPAPIClient.init(utils.merge_defaults(config, defaults))
     setmetatable( t, NGCPAPIClient_MT )
     return t
diff --git a/ngcp/dlgcnt.lua b/ngcp/dlgcnt.lua
index e4ee248..7558e6f 100644
--- a/ngcp/dlgcnt.lua
+++ b/ngcp/dlgcnt.lua
@@ -50,7 +50,7 @@ NGCPDlgCounters_MT.__tostring = function (t)
         utable.tostring(t.pair));
 end
 -- luacheck: globals KSR
-    function NGCPDlgCounters.new(config)
+    function NGCPDlgCounters:new(config)
         local t = NGCPDlgCounters.init(utils.merge_defaults(config, defaults))
         setmetatable( t, NGCPDlgCounters_MT )
         return t
@@ -59,8 +59,8 @@ end
     function NGCPDlgCounters.init(config)
         return {
             config = config,
-            central = NGCPRedis.new(config.central),
-            pair = NGCPRedis.new(config.pair)
+            central = NGCPRedis:new(config.central),
+            pair = NGCPRedis:new(config.pair)
         }
     end
 
diff --git a/ngcp/dlglist.lua b/ngcp/dlglist.lua
index 44a8091..717f2f6 100644
--- a/ngcp/dlglist.lua
+++ b/ngcp/dlglist.lua
@@ -49,7 +49,7 @@ NGCPDlgList_MT.__tostring = function (t)
         utable.tostring(t.pair));
 end
 -- luacheck: globals KSR
-    function NGCPDlgList.new(config)
+    function NGCPDlgList:new(config)
         local t = NGCPDlgList.init(utils.merge_defaults(config, defaults))
         setmetatable( t, NGCPDlgList_MT )
         return t
@@ -58,8 +58,8 @@ end
     function NGCPDlgList.init(config)
         return {
             config = config,
-            central = NGCPRedis.new(config.central),
-            pair = NGCPRedis.new(config.pair)
+            central = NGCPRedis:new(config.central),
+            pair = NGCPRedis:new(config.pair)
         }
     end
 
diff --git a/ngcp/loop.lua b/ngcp/loop.lua
index 21f6a48..001ad51 100644
--- a/ngcp/loop.lua
+++ b/ngcp/loop.lua
@@ -42,7 +42,7 @@ NGCPLoop_MT.__tostring = function (t)
         utable.tostring(t.config));
 end
 -- luacheck: globals KSR
-    function NGCPLoop.new(config)
+    function NGCPLoop:new(config)
         local t = NGCPLoop.init(utils.merge_defaults(config, defaults))
         setmetatable( t, NGCPLoop_MT )
         return t
@@ -51,7 +51,7 @@ end
     function NGCPLoop.init(config)
         return {
             config = config,
-            redis = NGCPRedis.new(config)
+            redis = NGCPRedis:new(config)
         }
     end
 
diff --git a/ngcp/push.lua b/ngcp/push.lua
index 7bc742d..024b20c 100644
--- a/ngcp/push.lua
+++ b/ngcp/push.lua
@@ -43,7 +43,7 @@ NGCPPush_MT.__tostring = function (t)
     return string.format("config:%s", utable.tostring(t.config))
 end
 
-function NGCPPush.new(config)
+function NGCPPush:new(config)
     local t = NGCPPush.init(utils.merge_defaults(config, defaults));
     setmetatable( t, NGCPPush_MT )
     return t;
@@ -53,7 +53,7 @@ function NGCPPush.init(config)
     return {
         config = config,
         c = curl.easy_init(),
-        redis = NGCPRedis.new(config.central)
+        redis = NGCPRedis:new(config.central)
     }
 end
 
diff --git a/ngcp/recentcalls.lua b/ngcp/recentcalls.lua
index 8d088a3..3ae123c 100644
--- a/ngcp/recentcalls.lua
+++ b/ngcp/recentcalls.lua
@@ -43,7 +43,7 @@ NGCPRecentCalls_MT.__tostring = function (t)
         utable.tostring(t.config), utable.tostring(t.redis))
 end
 -- luacheck: globals KSR
-    function NGCPRecentCalls.new(config)
+    function NGCPRecentCalls:new(config)
         local t = NGCPRecentCalls.init(utils.merge_defaults(config, defaults))
         setmetatable( t, NGCPRecentCalls_MT )
         return t
@@ -52,7 +52,7 @@ end
     function NGCPRecentCalls.init(config)
         return {
             config = config,
-            redis = NGCPRedis.new(config.central)
+            redis = NGCPRedis:new(config.central)
         }
     end
 
diff --git a/ngcp/redis.lua b/ngcp/redis.lua
index 21ae64b..087d2ed 100644
--- a/ngcp/redis.lua
+++ b/ngcp/redis.lua
@@ -36,7 +36,7 @@ NGCPRedis.__tostring = function (t)
     return string.format("config:%s", utable.tostring(t.config))
 end
 
-function NGCPRedis.new(config)
+function NGCPRedis:new(config)
   local t = NGCPRedis:create()
   t.config = utils.merge_defaults(config, defaults)
   return t;
diff --git a/ngcp/utils.lua b/ngcp/utils.lua
index 1476193..1345e46 100644
--- a/ngcp/utils.lua
+++ b/ngcp/utils.lua
@@ -385,7 +385,7 @@ local Stack_MT = {
 }
 
 -- Create a Table with stack functions
-function Stack.new()
+function Stack:new()
   local t = { _et = {} }
   setmetatable(t, Stack_MT)
   return t
diff --git a/scripts/ngcp-dlglist-clean b/scripts/ngcp-dlglist-clean
index b48087d..ccb5766 100644
--- a/scripts/ngcp-dlglist-clean
+++ b/scripts/ngcp-dlglist-clean
@@ -51,7 +51,7 @@ local args = parser:parse()
 
 get_config()
 
-local dlg = NGCPDlgList.new()
+local dlg = NGCPDlgList:new()
 if dlg_config then
 	dlg.config.central.host = dlg_config.central.host
 	dlg.config.central.port = dlg_config.central.port
diff --git a/tests/mocks_hdr.lua b/tests/mocks_hdr.lua
index ffdf483..b1f3191 100644
--- a/tests/mocks_hdr.lua
+++ b/tests/mocks_hdr.lua
@@ -24,7 +24,7 @@ local hdrMock = require 'mocks.hdr'
 -- luacheck: ignore TestHDRMock
 TestHDRMock = {}
     function TestHDRMock:setUp()
-        self.hdr = hdrMock.new()
+        self.hdr = hdrMock:new()
     end
 
     function TestHDRMock:tearDown()
diff --git a/tests/mocks_ksr.lua b/tests/mocks_ksr.lua
index a7e7432..010d279 100644
--- a/tests/mocks_ksr.lua
+++ b/tests/mocks_ksr.lua
@@ -24,7 +24,7 @@ local ksrMock = require 'mocks.ksr'
 -- luacheck: ignore TestKEMIMock
 TestKEMIMock = {}
     function TestKEMIMock:setUp()
-        self.KSR = ksrMock.new()
+        self.KSR = ksrMock:new()
     end
 
     function TestKEMIMock:test_hdr_get()
diff --git a/tests/mocks_pv.lua b/tests/mocks_pv.lua
index a41454a..c12ccba 100644
--- a/tests/mocks_pv.lua
+++ b/tests/mocks_pv.lua
@@ -25,8 +25,8 @@ local pvMock = require 'mocks.pv'
 -- luacheck: ignore TestPVMock
 TestPVMock = {}
     function TestPVMock:setUp()
-        local hdr = hdrMock.new()
-        self.pv = pvMock.new(hdr)
+        local hdr = hdrMock:new()
+        self.pv = pvMock:new(hdr)
     end
 
     function TestPVMock:tearDown()
diff --git a/tests/mocks_pvx.lua b/tests/mocks_pvx.lua
index 8e40756..34efa53 100644
--- a/tests/mocks_pvx.lua
+++ b/tests/mocks_pvx.lua
@@ -25,8 +25,8 @@ local pvxMock = require 'mocks.pvx'
 -- luacheck: ignore TestPVXMock
 TestPVXMock = {}
     function TestPVXMock:setUp()
-        self.pv = pvMock.new()
-        self.pvx = pvxMock.new(self.pv)
+        self.pv = pvMock:new()
+        self.pvx = pvxMock:new(self.pv)
 
         self.pv.sets("$xavp(test=>uno)", "uno")
         lu.assertEquals(self.pv.get("$xavp(test[0]=>uno)"), "uno")
diff --git a/tests/ngcp.lua b/tests/ngcp.lua
index 8f66d56..514da12 100644
--- a/tests/ngcp.lua
+++ b/tests/ngcp.lua
@@ -29,7 +29,7 @@ local utils = require 'ngcp.utils'
 local utable = utils.table
 
 local ksrMock = require 'mocks.ksr'
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 local mc,env
 local dp_vars = DPFetch:new()
diff --git a/tests/ngcp_api_client.lua b/tests/ngcp_api_client.lua
index 06aa8b6..e8b5a8d 100644
--- a/tests/ngcp_api_client.lua
+++ b/tests/ngcp_api_client.lua
@@ -36,7 +36,7 @@ TestNGCPAPIClient = {} --class
 
         local NGCPAPIClient = require 'ngcp.api_client'
 
-        self.client = NGCPAPIClient.new()
+        self.client = NGCPAPIClient:new()
         lu.assertNotNil(self.client)
 
         self.client.c = self.c;
diff --git a/tests/ngcp_avp.lua b/tests/ngcp_avp.lua
index a7ca169..dd7d891 100644
--- a/tests/ngcp_avp.lua
+++ b/tests/ngcp_avp.lua
@@ -21,7 +21,7 @@ local lu = require('luaunit')
 local ksrMock = require 'mocks.ksr'
 local NGCPAvp = require 'ngcp.avp'
 
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 -- luacheck: ignore TestNGCPAvp
 TestNGCPAvp = {} --class
diff --git a/tests/ngcp_cp.lua b/tests/ngcp_cp.lua
index 5078649..e8d9af8 100644
--- a/tests/ngcp_cp.lua
+++ b/tests/ngcp_cp.lua
@@ -22,7 +22,7 @@ local lemock = require('lemock')
 local CPFetch = require 'tests_v.cp_vars'
 
 local ksrMock = require 'mocks.ksr'
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 local mc,env,con
 local cp_vars = CPFetch:new()
diff --git a/tests/ngcp_dlgcnt.lua b/tests/ngcp_dlgcnt.lua
index 83b2665..691bb61 100644
--- a/tests/ngcp_dlgcnt.lua
+++ b/tests/ngcp_dlgcnt.lua
@@ -36,7 +36,7 @@ TestNGCPDlgCnt = {} --class
         package.loaded.redis = self.fake_redis
         local NGCPDlg = require 'ngcp.dlgcnt'
 
-        self.dlg = NGCPDlg.new()
+        self.dlg = NGCPDlg:new()
         lu.assertEvalToTrue(self.dlg)
 
         self.dlg.central.client = self.central;
diff --git a/tests/ngcp_dlglist.lua b/tests/ngcp_dlglist.lua
index 04c254e..9db6b69 100644
--- a/tests/ngcp_dlglist.lua
+++ b/tests/ngcp_dlglist.lua
@@ -38,7 +38,7 @@ function TestNGCPDlgList:setUp()
     package.loaded.redis = self.fake_redis
     local NGCPDlgList = require 'ngcp.dlglist'
 
-    self.dlg = NGCPDlgList.new()
+    self.dlg = NGCPDlgList:new()
     lu.assertEvalToTrue(self.dlg)
 
     self.dlg.central.client = self.central;
diff --git a/tests/ngcp_dp.lua b/tests/ngcp_dp.lua
index 8417d48..7b463e2 100644
--- a/tests/ngcp_dp.lua
+++ b/tests/ngcp_dp.lua
@@ -24,7 +24,7 @@ local lemock = require('lemock')
 local DPFetch = require 'tests_v.dp_vars'
 
 local ksrMock = require 'mocks.ksr'
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 local mc,env,con
 local dp_vars = DPFetch:new()
diff --git a/tests/ngcp_fp.lua b/tests/ngcp_fp.lua
index b371cc0..525d963 100644
--- a/tests/ngcp_fp.lua
+++ b/tests/ngcp_fp.lua
@@ -22,7 +22,7 @@ local lemock = require('lemock')
 local FPFetch = require 'tests_v.fp_vars'
 
 local ksrMock = require 'mocks.ksr'
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 local mc,env,con
 local fp_vars = FPFetch:new()
diff --git a/tests/ngcp_loop.lua b/tests/ngcp_loop.lua
index bb3a677..f0dd39e 100644
--- a/tests/ngcp_loop.lua
+++ b/tests/ngcp_loop.lua
@@ -37,7 +37,7 @@ function TestNGCPLoop:setUp()
     package.loaded.redis = self.fake_redis
     local NGCPLoop = require 'ngcp.loop'
 
-    self.loop = NGCPLoop.new()
+    self.loop = NGCPLoop:new()
     lu.assertNotNil(self.loop)
 
     self.loop.redis.client = self.client;
diff --git a/tests/ngcp_pp.lua b/tests/ngcp_pp.lua
index 04a06a7..af494da 100644
--- a/tests/ngcp_pp.lua
+++ b/tests/ngcp_pp.lua
@@ -25,7 +25,7 @@ local PPFetch = require 'tests_v.pp_vars'
 
 
 local ksrMock = require 'mocks.ksr'
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 local mc,env,con
 local pp_vars = PPFetch:new()
diff --git a/tests/ngcp_pprof.lua b/tests/ngcp_pprof.lua
index 0551817..6d65d89 100644
--- a/tests/ngcp_pprof.lua
+++ b/tests/ngcp_pprof.lua
@@ -22,7 +22,7 @@ local lemock = require('lemock')
 local PProfFetch = require 'tests_v.pprof_vars'
 
 local ksrMock = require 'mocks.ksr'
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 local mc,env,con
 local pprof_vars = PProfFetch:new()
diff --git a/tests/ngcp_pref.lua b/tests/ngcp_pref.lua
index bdbd706..f80d17a 100644
--- a/tests/ngcp_pref.lua
+++ b/tests/ngcp_pref.lua
@@ -21,7 +21,7 @@ local lu = require('luaunit')
 local NGCPPrefs = require 'ngcp.pref'
 -- luacheck: globals KSR
 local ksrMock = require 'mocks.ksr'
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 -- luacheck: ignore TestNGCPPrefs
 TestNGCPPrefs = {} --class
diff --git a/tests/ngcp_recentcalls.lua b/tests/ngcp_recentcalls.lua
index 6d5556f..574b6da 100644
--- a/tests/ngcp_recentcalls.lua
+++ b/tests/ngcp_recentcalls.lua
@@ -37,7 +37,7 @@ TestNGCPRecentCalls = {} --class
         package.loaded.redis = self.fake_redis
         local NGCPRecentCalls = require 'ngcp.recentcalls'
 
-        self.rcalls = NGCPRecentCalls.new()
+        self.rcalls = NGCPRecentCalls:new()
         lu.assertNotNil(self.rcalls)
         lu.assertNotNil(self.rcalls.redis)
         lu.assertNotNil(self.rcalls.redis.config)
@@ -46,7 +46,7 @@ TestNGCPRecentCalls = {} --class
 
     function TestNGCPRecentCalls:test_config()
         local NGCPRecentCalls = require 'ngcp.recentcalls'
-        rcalls = NGCPRecentCalls.new({central = {db = 10}})
+        rcalls = NGCPRecentCalls:new({central = {db = 10}})
         lu.assertEquals(rcalls.config.central.db, 10)
         lu.assertNotNil(rcalls.config.central.port)
     end
diff --git a/tests/ngcp_redis.lua b/tests/ngcp_redis.lua
index 6cca368..0d8358f 100644
--- a/tests/ngcp_redis.lua
+++ b/tests/ngcp_redis.lua
@@ -41,7 +41,7 @@ TestNGCPRedis = {} --class
     package.loaded.redis = self.fake_redis
     local NGCPRedis = require 'ngcp.redis'
 
-    self.ngcp_redis = NGCPRedis.new()
+    self.ngcp_redis = NGCPRedis:new()
     lu.assertNotNil(self.ngcp_redis)
     lu.assertNotNil(self.ngcp_redis.config)
     self.ngcp_redis.client = self.client;
diff --git a/tests/ngcp_rp.lua b/tests/ngcp_rp.lua
index 2f780e0..b786d0c 100644
--- a/tests/ngcp_rp.lua
+++ b/tests/ngcp_rp.lua
@@ -24,7 +24,7 @@ local NGCPPeerPrefs = require 'ngcp.pp'
 local NGCPRealPrefs = require 'ngcp.rp'
 
 local ksrMock = require 'mocks.ksr'
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 -- luacheck: ignore TestNGCPRealPrefs
 TestNGCPRealPrefs = {} --class
diff --git a/tests/ngcp_up.lua b/tests/ngcp_up.lua
index 530b0c1..936dee8 100644
--- a/tests/ngcp_up.lua
+++ b/tests/ngcp_up.lua
@@ -25,7 +25,7 @@ local UPFetch = require 'tests_v.up_vars'
 local bp_vars = require 'tests_v.bp_vars'
 
 local ksrMock = require 'mocks.ksr'
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 local mc,env,con
 local up_vars = UPFetch:new()
diff --git a/tests/ngcp_xavp.lua b/tests/ngcp_xavp.lua
index b69fbdb..b82cb25 100644
--- a/tests/ngcp_xavp.lua
+++ b/tests/ngcp_xavp.lua
@@ -21,7 +21,7 @@ local lu = require('luaunit')
 local NGCPXAvp = require 'ngcp.xavp'
 
 local ksrMock = require 'mocks.ksr'
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 local vals = {
     {
diff --git a/tests/use_cases.lua b/tests/use_cases.lua
index da34209..70f0866 100644
--- a/tests/use_cases.lua
+++ b/tests/use_cases.lua
@@ -22,7 +22,7 @@ local NGCPXAvp = require 'ngcp.xavp'
 local NGCPAvp = require 'ngcp.avp'
 
 local ksrMock = require 'mocks.ksr'
-KSR = ksrMock.new()
+KSR = ksrMock:new()
 
 -- luacheck: ignore TestUseCases
 TestUseCases = {}
diff --git a/tests/utils_stack.lua b/tests/utils_stack.lua
index 57dc20b..cbd897d 100644
--- a/tests/utils_stack.lua
+++ b/tests/utils_stack.lua
@@ -24,7 +24,7 @@ local Stack = utils.Stack
 -- luacheck: ignore TestStack
 TestStack = {}
     function TestStack:test()
-        local s = Stack.new()
+        local s = Stack:new()
         lu.assertEquals(type(s), 'table')
         lu.assertEquals(s.__class__, 'Stack')
     end
diff --git a/tests_v/cp_vars.lua b/tests_v/cp_vars.lua
index 030d505..c474ea2 100644
--- a/tests_v/cp_vars.lua
+++ b/tests_v/cp_vars.lua
@@ -50,7 +50,7 @@ local CPFetch = {
     __class__ = 'CPFetch',
     _i = 1
 }
-    function CPFetch.new()
+    function CPFetch:new()
         local t = {}
         return setmetatable(t, { __index = CPFetch })
     end
diff --git a/tests_v/dp_vars.lua b/tests_v/dp_vars.lua
index c41d5f7..b70ba06 100644
--- a/tests_v/dp_vars.lua
+++ b/tests_v/dp_vars.lua
@@ -171,7 +171,7 @@ local DPFetch = {
     __class__ = 'DPFetch',
     _i = 1
 }
-    function DPFetch.new()
+    function DPFetch:new()
         local t = {}
         return setmetatable(t, { __index = DPFetch })
     end
diff --git a/tests_v/fp_vars.lua b/tests_v/fp_vars.lua
index dea0778..92a2b16 100644
--- a/tests_v/fp_vars.lua
+++ b/tests_v/fp_vars.lua
@@ -51,7 +51,7 @@ local fp_vars = {
 local FPFetch = {
     __class__ = 'FPFetch',
 }
-    function FPFetch.new()
+    function FPFetch:new()
         local t = {}
         return setmetatable(t, { __index = FPFetch })
     end
diff --git a/tests_v/pp_vars.lua b/tests_v/pp_vars.lua
index 09b12fa..e1de171 100644
--- a/tests_v/pp_vars.lua
+++ b/tests_v/pp_vars.lua
@@ -178,7 +178,7 @@ local PPFetch = {
     __class__ = 'PPFetch',
     _i = 1
 }
-    function PPFetch.new()
+    function PPFetch:new()
         local t = {}
         return setmetatable(t, { __index = PPFetch })
     end
diff --git a/tests_v/pprof_vars.lua b/tests_v/pprof_vars.lua
index 127d26e..e3c7c4b 100644
--- a/tests_v/pprof_vars.lua
+++ b/tests_v/pprof_vars.lua
@@ -178,7 +178,7 @@ local PProfFetch = {
     __class__ = 'PProfFetch',
     _i = 1
 }
-    function PProfFetch.new()
+    function PProfFetch:new()
         local t = {}
         return setmetatable(t, { __index = PProfFetch })
     end
diff --git a/tests_v/up_vars.lua b/tests_v/up_vars.lua
index 3a450ee..964ab10 100644
--- a/tests_v/up_vars.lua
+++ b/tests_v/up_vars.lua
@@ -162,7 +162,7 @@ local UPFetch = {
     __class__ = 'UPFetch',
     _i = 1
 }
-    function UPFetch.new()
+    function UPFetch:new()
         local t = {}
         return setmetatable(t, { __index = UPFetch })
     end