diff --git a/include/wx/clipbrd.h b/include/wx/clipbrd.h
index 0870a03d29..e7ab30b41e 100644
--- a/include/wx/clipbrd.h
+++ b/include/wx/clipbrd.h
@@ -121,7 +121,7 @@ public:
         }
     }
 
-    bool IsOk() const { return m_clipboard->IsOpened(); }
+    bool operator!() const { return !m_clipboard->IsOpened(); }
 
     ~wxClipboardLocker()
     {