diff --git a/src/main/kotlin/tests/ChatItemGroupCallUpdateTestCase.kt b/src/main/kotlin/tests/ChatItemGroupCallUpdateTestCase.kt
index 309a4d94..899fc1d8 100644
--- a/src/main/kotlin/tests/ChatItemGroupCallUpdateTestCase.kt
+++ b/src/main/kotlin/tests/ChatItemGroupCallUpdateTestCase.kt
@@ -61,7 +61,7 @@ object ChatItemGroupCallUpdateTestCase : TestCase("chat_item_group_call_update")
               GroupCall.State.JOINED,
               GroupCall.State.OUTGOING_RING,
               GroupCall.State.RINGING,
-              GroupCall.State.ACCEPTED -> 0L
+              GroupCall.State.ACCEPTED -> null
               GroupCall.State.UNKNOWN_STATE -> throw NotImplementedError()
             },
             read = when (callState) {