diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/externalevents/OpenTracksController.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/externalevents/OpenTracksController.java
index 7740bbe4e..3d749e0da 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/externalevents/OpenTracksController.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/externalevents/OpenTracksController.java
@@ -89,5 +89,6 @@ public class OpenTracksController extends Activity {
         if (openTracksObserver != null) {
             openTracksObserver.finish();
         }
+        GBApplication.app().setOpenTracksObserver(null);
     }
 }
\ No newline at end of file