diff --git a/app/src/main/java/org/thoughtcrime/securesms/service/webrtc/GroupConnectedActionProcessor.java b/app/src/main/java/org/thoughtcrime/securesms/service/webrtc/GroupConnectedActionProcessor.java
index a9eb1f7ff8..1fac274cc6 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/service/webrtc/GroupConnectedActionProcessor.java
+++ b/app/src/main/java/org/thoughtcrime/securesms/service/webrtc/GroupConnectedActionProcessor.java
@@ -253,7 +253,10 @@ public class GroupConnectedActionProcessor extends GroupActionProcessor {
     String eraId = WebRtcUtil.getGroupCallEraId(groupCall);
     webRtcInteractor.sendGroupCallMessage(currentState.getCallInfoState().getCallRecipient(), eraId, null, false, false);
 
-    List<UUID> members = Stream.of(currentState.getCallInfoState().getRemoteCallParticipants()).map(p -> p.getRecipient().requireServiceId().getRawUuid()).toList();
+    List<UUID> members = Stream.of(currentState.getCallInfoState().getRemoteCallParticipants())
+                               .filter(p -> p.getRecipient().getHasServiceId())
+                               .map(p -> p.getRecipient().requireServiceId().getRawUuid())
+                               .toList();
     webRtcInteractor.updateGroupCallUpdateMessage(currentState.getCallInfoState().getCallRecipient().getId(), eraId, members, false);
 
     currentState = currentState.builder()