diff --git a/cockatrice/src/client/tabs/tab.h b/cockatrice/src/client/tabs/tab.h
index 204a08a9f..b046d5c7a 100644
--- a/cockatrice/src/client/tabs/tab.h
+++ b/cockatrice/src/client/tabs/tab.h
@@ -56,7 +56,7 @@ public:
      *
      * @param forced whether this close request was initiated by the user or forced by the server.
      */
-    virtual void closeRequest(bool forced = false)
+    virtual void closeRequest(bool /*forced*/ = false)
     {
     }
     virtual void tabActivated()