diff --git a/include/wx/generic/splitter.h b/include/wx/generic/splitter.h
index fdaeb8023a..2b75bb1d98 100644
--- a/include/wx/generic/splitter.h
+++ b/include/wx/generic/splitter.h
@@ -211,9 +211,6 @@ public:
     // Resizes subwindows
     virtual void SizeWindows();
 
-    void SetNeedUpdating(bool needUpdating) { m_needUpdating = needUpdating; }
-    bool GetNeedUpdating() const { return m_needUpdating ; }
-
 #ifdef __WXMAC__
     virtual bool MacClipGrandChildren() const { return true ; }
 #endif
diff --git a/src/generic/splitter.cpp b/src/generic/splitter.cpp
index 968c1a1d58..c5833830c8 100644
--- a/src/generic/splitter.cpp
+++ b/src/generic/splitter.cpp
@@ -203,7 +203,10 @@ void wxSplitterWindow::OnInternalIdle()
     }
 
     if (m_needUpdating)
+    {
+        m_needUpdating = false;
         SizeWindows();
+    }
 }
 
 void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
@@ -709,8 +712,6 @@ void wxSplitterWindow::SizeWindows()
 
     wxClientDC dc(this);
     DrawSash(dc);
-
-    SetNeedUpdating(false);
 }
 
 // Set pane for unsplit window