diff --git a/scenarios/invite_tcp_udp/0003_test.yml.tt2 b/scenarios/invite_tcp_udp/0003_test.yml.tt2
index 118fe7db..a96681eb 100644
--- a/scenarios/invite_tcp_udp/0003_test.yml.tt2
+++ b/scenarios/invite_tcp_udp/0003_test.yml.tt2
@@ -21,7 +21,7 @@ flow:
   - exit|ROUTE_EXIT:
 sip_in:
   - '^INVITE'
-  - 'Contact: sip:testuser1002@'
+  - 'Contact: <sip:testuser1002@'
   - 'To: <sip:testuser1003@'
   - 'CSeq: 1 INVITE'
   - 'Max-Forwards: 69'
diff --git a/scenarios/invite_tcp_udp/0005_test.yml.tt2 b/scenarios/invite_tcp_udp/0005_test.yml.tt2
index 85407371..47175f03 100644
--- a/scenarios/invite_tcp_udp/0005_test.yml.tt2
+++ b/scenarios/invite_tcp_udp/0005_test.yml.tt2
@@ -187,7 +187,7 @@ flow:
       ]
 sip_in:
   - '^INVITE'
-  - 'Contact: sip:testuser1002@'
+  - 'Contact: <sip:testuser1002@'
   - 'CSeq: 2 INVITE'
   - 'Max-Forwards: 69'
   - 'Content-Type: application/sdp'
diff --git a/scenarios/invite_tcp_udp/0010_test.yml.tt2 b/scenarios/invite_tcp_udp/0010_test.yml.tt2
index bb618535..14749cbd 100644
--- a/scenarios/invite_tcp_udp/0010_test.yml.tt2
+++ b/scenarios/invite_tcp_udp/0010_test.yml.tt2
@@ -23,7 +23,7 @@ flow:
       $avp(proto): ["tcp"]
 sip_in:
   - '^BYE sip:127.0.0.1:5080(;prxroute=1)? SIP/2.0'
-  - 'Contact: sip:testuser1002@'
+  - 'Contact: <sip:testuser1002@'
   - 'CSeq: 3 BYE'
   - 'Max-Forwards: 69'
   - 'Content-Length: 0'
@@ -40,7 +40,7 @@ sip_out:
     ]
   - [
       '^BYE sip:127.0.0.1:5080(;prxroute=1)? SIP/2.0',
-      'Contact: sip:testuser1002@',
+      'Contact: <sip:testuser1002@',
       'CSeq: 3 BYE',
       'Max-Forwards: 68',
       'Content-Length: 0',
diff --git a/scenarios/invite_tcp_udp/sipp_scenario00.xml b/scenarios/invite_tcp_udp/sipp_scenario00.xml
index 13b3c912..571234b0 100644
--- a/scenarios/invite_tcp_udp/sipp_scenario00.xml
+++ b/scenarios/invite_tcp_udp/sipp_scenario00.xml
@@ -10,7 +10,7 @@
       To: <sip:[field0 file="callee.csv" line=0]@[field3 file="callee.csv" line=0]>
       Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id]
       CSeq: 1 INVITE
-      Contact: sip:[field0 file="caller.csv"]@[local_ip]:[local_port]
+      Contact: <sip:[field0 file="caller.csv"]@[local_ip]:[local_port]>
       Max-Forwards: 70
       Content-Type: application/sdp
       Content-Length: [len]
@@ -41,7 +41,7 @@
       To: <sip:[field0 file="callee.csv" line=0]@[field3 file="callee.csv" line=0]>[peer_tag_param]
       Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id]
       CSeq: 1 ACK
-      Contact: sip:[field0 file="caller.csv"]@[local_ip]:[local_port]
+      Contact: <sip:[field0 file="caller.csv"]@[local_ip]:[local_port]>
       Max-Forwards: 70
       Content-Length: 0
 
@@ -59,7 +59,7 @@
       To: <sip:[field0 file="callee.csv" line=0]@[field3 file="callee.csv" line=0]>
       Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id]
       CSeq: 2 INVITE
-      Contact: sip:[field0 file="caller.csv"]@[local_ip]:[local_port]
+      Contact: <sip:[field0 file="caller.csv"]@[local_ip]:[local_port]>
       Max-Forwards: 70
       [field1 file="caller.csv"]
       Content-Type: application/sdp
@@ -99,7 +99,7 @@
       Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id]
       [routes]
       CSeq: 2 ACK
-      Contact: sip:[field0 file="caller.csv"]@[local_ip]:[local_port]
+      Contact: <sip:[field0 file="caller.csv"]@[local_ip]:[local_port]>
       Max-Forwards: 70
       Content-Length: 0
 
@@ -124,7 +124,7 @@
       To: <sip:[field0 file="callee.csv" line=0]@[field3 file="callee.csv" line=0]>[peer_tag_param]
       Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id]
       CSeq: 3 BYE
-      Contact: sip:[field0 file="caller.csv"]@[local_ip]:[local_port]
+      Contact: <sip:[field0 file="caller.csv"]@[local_ip]:[local_port]>
       [routes]
       Max-Forwards: 70
       Content-Length: 0