diff --git a/backend/mpc-system/services/service-party-android/app/src/main/java/com/durian/tssparty/presentation/viewmodel/MainViewModel.kt b/backend/mpc-system/services/service-party-android/app/src/main/java/com/durian/tssparty/presentation/viewmodel/MainViewModel.kt
index 5b29eb1a..b4612ef5 100644
--- a/backend/mpc-system/services/service-party-android/app/src/main/java/com/durian/tssparty/presentation/viewmodel/MainViewModel.kt
+++ b/backend/mpc-system/services/service-party-android/app/src/main/java/com/durian/tssparty/presentation/viewmodel/MainViewModel.kt
@@ -401,7 +401,7 @@ class MainViewModel @Inject constructor(
                     val currentStatus = repository.sessionStatus.value
                     if (currentStatus == SessionStatus.IN_PROGRESS || currentStatus == SessionStatus.COMPLETED) {
                         android.util.Log.d("MainViewModel", "  Session already in progress/completed, ignoring participant_joined")
-                        return@collect
+                        return@setSessionEventCallback
                     }
 
                     // Update participant count for initiator's CreateWallet screen