diff --git a/scenarios/invite_peerout_failover/0005_test.yml.tt2 b/scenarios/invite_peerout_failover/0005_test.yml.tt2
index d116aa79..6306718f 100644
--- a/scenarios/invite_peerout_failover/0005_test.yml.tt2
+++ b/scenarios/invite_peerout_failover/0005_test.yml.tt2
@@ -127,28 +127,28 @@ flow:
       ]
   - exit|ROUTE_OUTBOUND:
 "sip_in":
-  - "^SIP/2.0 408 Timeout"
+  - '^SIP/2.0 408 Timeout'
 "sip_out":
   - [
-      "^ACK sip:004321001@127.0.4.1:\d+;transport=udp SIP/2.0",
-      "From: <sip:4311002@spce.test>;tag=",
-      "To: <sip:004321001@spce.test>;tag=",
-      "CSeq: 2 ACK",
-      "Content-Length: 0"
+      '^ACK sip:004321001@127.0.4.1:\d+;transport=udp SIP/2.0',
+      'From: <sip:4311002@spce.test>;tag=',
+      'To: <sip:004321001@spce.test>;tag=',
+      'CSeq: 2 ACK',
+      'Content-Length: 0'
     ]
   - [
       '^INVITE sip:004321001@127.0.2.1:\d+;transport=udp SIP/2.0',
-      "From: <sip:4311002@spce.test>;tag=",
-      "To: <sip:004321001@spce.test>",
-      "CSeq: 2 INVITE",
-      "Contact: sip:testuser1002@",
-      "Content-Type: application/sdp",
+      'From: <sip:4311002@spce.test>;tag=',
+      'To: <sip:004321001@spce.test>',
+      'CSeq: 2 INVITE',
+      'Contact: sip:testuser1002@',
+      'Content-Type: application/sdp',
       'P-Caller-UUID: [% spce_test.testuser1002.uuid %]',
       'P-Callee-UUID: [% spce_test.testuser1001.uuid %]',
-      "P-Asserted-Identity: <sip:4311002@spce.test>",
-      "P-Called-Party-ID: <sip:004321001@127.0.4.1>",
-      "P-App-Param: ;calltimer=21600;aleg_sst_enable=no;sst_enable=no",
-      "P-App-Name: sbc",
+      'P-Asserted-Identity: <sip:4311002@spce.test>',
+      'P-Called-Party-ID: <sip:004321001@127.0.4.1>',
+      'P-App-Param: ;calltimer=21600;aleg_sst_enable=no;sst_enable=no',
+      'P-App-Name: sbc',
       'P-NGCP-Caller-Info: <sip:testuser1002@spce.test>;ip=127.126.0.1;port=\d+;primary=4311002',
       'P-NGCP-Callee-Info: <sip:004321001@spce.test>;ip=127.0.2.1;port=\d+',
       'P-D-Uri: sip:127.0.0.1:5060;received=',