diff --git a/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothCommunication.java b/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothCommunication.java
index 86f2224f3..51aa0c57d 100644
--- a/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothCommunication.java
+++ b/android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothCommunication.java
@@ -80,6 +80,10 @@ public BluetoothCommunication(Context context)
         this.central = new BluetoothCentralManager(context, bluetoothCentralCallback, new Handler(Looper.getMainLooper()));
     }
 
+    public BluetoothCommunication() {
+
+    }
+
     protected boolean needReConnect() {
         if (callbackBtHandler == null) {
             return true;