diff --git a/java/com/android/incallui/call/DialerCall.java b/java/com/android/incallui/call/DialerCall.java
index f9afd2d..76d3e8b 100644
--- a/java/com/android/incallui/call/DialerCall.java
+++ b/java/com/android/incallui/call/DialerCall.java
@@ -344,6 +344,7 @@
               // now update the UI to possibly re-enable the Merge button based on the number of
               // currently conferenceable calls available or Connection Capabilities.
             case android.telecom.Connection.EVENT_CALL_MERGE_FAILED:
+              isMergeInProcess = false;
               update();
               break;
             case TelephonyManagerCompat.EVENT_HANDOVER_VIDEO_FROM_WIFI_TO_LTE: