diff --git a/include/wx/gtk/toplevel.h b/include/wx/gtk/toplevel.h
index 36fc1ee61d..b26ea6d4ad 100644
--- a/include/wx/gtk/toplevel.h
+++ b/include/wx/gtk/toplevel.h
@@ -90,8 +90,6 @@ public:
     // --------------------------
 
     // GTK callbacks
-    virtual void OnInternalIdle() wxOVERRIDE;
-
     virtual void GTKHandleRealized() wxOVERRIDE;
 
     void GTKConfigureEvent(int x, int y);
diff --git a/src/gtk/toplevel.cpp b/src/gtk/toplevel.cpp
index d61c84cd25..9853556f1b 100644
--- a/src/gtk/toplevel.cpp
+++ b/src/gtk/toplevel.cpp
@@ -1264,11 +1264,6 @@ wxTopLevelWindowGTK::DecorSize& wxTopLevelWindowGTK::GetCachedDecorSize()
     return size[index];
 }
 
-void wxTopLevelWindowGTK::OnInternalIdle()
-{
-    wxTopLevelWindowBase::OnInternalIdle();
-}
-
 // ----------------------------------------------------------------------------
 // frame title/icon
 // ----------------------------------------------------------------------------