diff --git a/services/core/java/com/android/server/BluetoothManagerService.java b/services/core/java/com/android/server/BluetoothManagerService.java
index adc59de87f23a..4f43eac8b3cab 100644
--- a/services/core/java/com/android/server/BluetoothManagerService.java
+++ b/services/core/java/com/android/server/BluetoothManagerService.java
@@ -2029,6 +2029,11 @@ class BluetoothManagerService extends IBluetoothManager.Stub {
             }
 
             writer.flush();
+            if (args.length == 0) {
+              // Add arg to produce output
+              args = new String[1];
+              args[0] = "--print";
+            }
         }
 
         if (mBluetoothBinder == null) {