diff --git a/src/debugger/gui/DebuggerDialog.cxx b/src/debugger/gui/DebuggerDialog.cxx
index 453a04646..0fa24d727 100644
--- a/src/debugger/gui/DebuggerDialog.cxx
+++ b/src/debugger/gui/DebuggerDialog.cxx
@@ -185,6 +185,9 @@ void DebuggerDialog::handleKeyDown(StellaKey key, StellaMod mod)
     case Event::UnwindAllMenu:
       doUnwindAll();
       return;
+
+    default:
+      break;
   }
 
   Dialog::handleKeyDown(key, mod);