diff --git a/android/app/src/main/java/com/eddy/atomrelay/MainActivity.kt b/android/app/src/main/java/com/eddy/atomrelay/MainActivity.kt
index f3576b7..b5342d5 100644
--- a/android/app/src/main/java/com/eddy/atomrelay/MainActivity.kt
+++ b/android/app/src/main/java/com/eddy/atomrelay/MainActivity.kt
@@ -118,6 +118,16 @@ class MainActivity : AppCompatActivity() {
                 runOnUiThread { statusText.text = "Service not found" }
             }
         }
+
+        @SuppressLint("MissingPermission")
+        override fun onCharacteristicWrite(gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic, status: Int) {
+            if (status == BluetoothGatt.GATT_SUCCESS) {
+                Log.d(TAG, "Write confirmed by local BLE stack (status=$status)")
+            } else {
+                Log.w(TAG, "Write failed (status=$status)")
+                runOnUiThread { statusText.text = "Communicatiefout" }
+            }
+        }
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {