diff --git a/lib/session/call-info.js b/lib/session/call-info.js
index fb7cd7fd..78c4f4d6 100644
--- a/lib/session/call-info.js
+++ b/lib/session/call-info.js
@@ -40,13 +40,13 @@ class CallInfo {
         this.participants = [
           {
             participant: 'caller',
-            uriUser: caller.user,
-            uriHost: caller.host
+            uriUser: caller?.user,
+            uriHost: caller?.host
           },
           {
             participant: 'callee',
-            uriUser: callee.user,
-            uriHost: callee.host
+            uriUser: callee?.user,
+            uriHost: callee?.host
           }
         ];
       }