diff --git a/src/generic/splitter.cpp b/src/generic/splitter.cpp
index 53c7b8c15c..93a7e53b41 100644
--- a/src/generic/splitter.cpp
+++ b/src/generic/splitter.cpp
@@ -342,7 +342,7 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
             m_needUpdating = TRUE;
         }
     }
-    else if ( event.LeftDClick() )
+    else if ( event.LeftDClick() && m_windowTwo )
     {
         OnDoubleClickSash(x, y);
     }