diff --git a/examplesync/src/main/java/com/felhr/serialportexamplesync/UsbService.java b/examplesync/src/main/java/com/felhr/serialportexamplesync/UsbService.java
index d1d962f..7a96b23 100644
--- a/examplesync/src/main/java/com/felhr/serialportexamplesync/UsbService.java
+++ b/examplesync/src/main/java/com/felhr/serialportexamplesync/UsbService.java
@@ -156,6 +156,7 @@ public class UsbService extends Service {
     @Override
     public void onDestroy() {
         super.onDestroy();
+        unregisterReceiver(usbReceiver);
         UsbService.SERVICE_CONNECTED = false;
     }