diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/DelegateBase.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/DelegateBase.java
index 1a05e5a0e..31fee927c 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/DelegateBase.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/DelegateBase.java
@@ -80,7 +80,10 @@ public class DelegateBase implements DlgDelegate.DlgClickNotify,
     protected boolean onBackPressed() { return false; }
     protected void prepareDialog( DlgID dlgID, Dialog dialog ) {}
     protected void onActivityResult( int requestCode, int resultCode, 
-                                     Intent data ) {}
+                                     Intent data ) 
+    {
+        DbgUtils.logf( "DelegateBase.onActivityResult(): subclass responsibility!!!" );
+    }
 
     protected void onResume() 
     {