diff --git a/examples/feature/socketnotifier/SocketNotifier.C b/examples/feature/socketnotifier/SocketNotifier.C
index 9cdff5b..96f0058 100644
--- a/examples/feature/socketnotifier/SocketNotifier.C
+++ b/examples/feature/socketnotifier/SocketNotifier.C
@@ -212,6 +212,8 @@ private:
         }
       }
       break;
+    default:
+      break;
     }
   }