diff --git a/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothBeurerBF600.java b/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothBeurerBF600.java
index 05e9dced..cf48575b 100644
--- a/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothBeurerBF600.java
+++ b/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothBeurerBF600.java
@@ -84,8 +84,13 @@ public class BluetoothBeurerBF600 extends BluetoothStandardWeightProfile {
 
     @Override
     protected void setNotifyVendorSpecificUserList() {
-        setNotificationOn(BluetoothGattUuidBF600.SERVICE_BEURER_CUSTOM_BF600,
-                BluetoothGattUuidBF600.CHARACTERISTIC_BEURER_BF600_USER_LIST);
+        if (setNotificationOn(BluetoothGattUuidBF600.SERVICE_BEURER_CUSTOM_BF600,
+                BluetoothGattUuidBF600.CHARACTERISTIC_BEURER_BF600_USER_LIST)) {
+            Timber.d("setNotifyVendorSpecificUserList() OK");
+        }
+        else {
+            Timber.d("setNotifyVendorSpecificUserList() FAILED");
+        }
     }
 
     @Override
diff --git a/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothSwpSBF77.java b/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothSwpSBF77.java
index a464f491..545c2d4c 100644
--- a/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothSwpSBF77.java
+++ b/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothSwpSBF77.java
@@ -59,8 +59,13 @@ public class BluetoothSwpSBF77 extends BluetoothStandardWeightProfile {
 
     @Override
     protected void setNotifyVendorSpecificUserList() {
-        setNotificationOn(BluetoothGattUuidSBF77.SERVICE_CUSTOM_SBF77,
-                BluetoothGattUuidSBF77.CHARACTERISTIC_SBF77_USER_LIST);
+        if (setNotificationOn(BluetoothGattUuidSBF77.SERVICE_CUSTOM_SBF77,
+                BluetoothGattUuidSBF77.CHARACTERISTIC_SBF77_USER_LIST)) {
+            Timber.d("setNotifyVendorSpecificUserList() OK");
+        }
+        else {
+            Timber.d("setNotifyVendorSpecificUserList() FAILED");
+        }
     }
 
     @Override