diff --git a/src/main/java/eu/siacs/conversations/services/NotificationService.java b/src/main/java/eu/siacs/conversations/services/NotificationService.java
index a4eec7fb1857e58300a9ad8ca1e1db8ab0d349d9..6ccd2b74f90678b7a8da07267ccaa4707648cba7 100644
--- a/src/main/java/eu/siacs/conversations/services/NotificationService.java
+++ b/src/main/java/eu/siacs/conversations/services/NotificationService.java
@@ -410,12 +410,16 @@ public class NotificationService {
             Log.d(Config.LOGTAG,"do not ring or vibrate because interruption filter has been set to "+currentInterruptionFilter);
             return;
         }
+        final ScheduledFuture<?> currentVibrationFuture = this.vibrationFuture;
         this.vibrationFuture = SCHEDULED_EXECUTOR_SERVICE.scheduleAtFixedRate(
                 new VibrationRunnable(),
                 0,
                 3,
                 TimeUnit.SECONDS
         );
+        if (currentVibrationFuture != null) {
+            currentVibrationFuture.cancel(true);
+        }
         final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(mXmppConnectionService);
         final Resources resources = mXmppConnectionService.getResources();
         final String ringtonePreference = preferences.getString("call_ringtone", resources.getString(R.string.incoming_call_ringtone));