diff --git a/ngcp/dlgcnt.lua b/ngcp/dlgcnt.lua
index 2ae8b87..e94abc0 100644
--- a/ngcp/dlgcnt.lua
+++ b/ngcp/dlgcnt.lua
@@ -57,8 +57,6 @@ end
                 check_pair_dup = false,
                 allow_negative = false
             },
-            central = {},
-            pair = {}
         };
         return t;
     end
diff --git a/ngcp/dlglist.lua b/ngcp/dlglist.lua
index fd9b44d..8197143 100644
--- a/ngcp/dlglist.lua
+++ b/ngcp/dlglist.lua
@@ -56,8 +56,6 @@ end
                 },
                 check_pair_dup = false
             },
-            central = {},
-            pair = {}
         };
         return t;
     end
diff --git a/ngcp/push.lua b/ngcp/push.lua
index 90ec93c..b37eacd 100644
--- a/ngcp/push.lua
+++ b/ngcp/push.lua
@@ -51,7 +51,6 @@ function NGCPPush.init()
             },
         },
         c = curl.easy_init(),
-        client = {},
     };
     return t;
 end
diff --git a/ngcp/recentcalls.lua b/ngcp/recentcalls.lua
index 7502e44..16f2d7a 100644
--- a/ngcp/recentcalls.lua
+++ b/ngcp/recentcalls.lua
@@ -50,7 +50,6 @@ end
                 expire = 7200,
                 out_expire = 86400
             },
-            central = {},
         };
         return t;
     end