diff --git a/src/main/java/de/dennisguse/opentracks/services/TrackRecordingService.java b/src/main/java/de/dennisguse/opentracks/services/TrackRecordingService.java
index d17115087..3e5ef57eb 100644
--- a/src/main/java/de/dennisguse/opentracks/services/TrackRecordingService.java
+++ b/src/main/java/de/dennisguse/opentracks/services/TrackRecordingService.java
@@ -205,6 +205,7 @@ public void tryStartSensors() {
     private synchronized void startSensors() {
         if (isSensorStarted()) {
             Log.i(TAG, "sensors already started; skipping");
+            return;
         }
         Log.i(TAG, "startSensors");
         wakeLock = SystemUtils.acquireWakeLock(this, wakeLock);