diff --git a/contrib/src/fl/toolwnd.cpp b/contrib/src/fl/toolwnd.cpp
index 3f9824bf9f..5c846c27ef 100644
--- a/contrib/src/fl/toolwnd.cpp
+++ b/contrib/src/fl/toolwnd.cpp
@@ -497,7 +497,7 @@ void wxToolWindow::CalcResizedRect( wxRect& rect, wxPoint& delta, const wxSize&
 	}
 	else
 	{
-		wxFAIL( _T("what did the cursor hit?") );
+		wxFAIL_MSG( _T("what did the cursor hit?") );
 	}
 
 	rect.x = left;