diff --git a/src/propgrid/editors.cpp b/src/propgrid/editors.cpp
index 30093a2789..be733b2932 100644
--- a/src/propgrid/editors.cpp
+++ b/src/propgrid/editors.cpp
@@ -1533,8 +1533,6 @@ private:
     }
     void OnLeftClickActivate( wxCommandEvent& evt );
 
-    static wxBitmap* ms_doubleBuffer;
-
     DECLARE_EVENT_TABLE()
 };
 
@@ -1551,11 +1549,8 @@ END_EVENT_TABLE()
 
 wxSimpleCheckBox::~wxSimpleCheckBox()
 {
-    wxDELETE(ms_doubleBuffer);
 }
 
-wxBitmap* wxSimpleCheckBox::ms_doubleBuffer = NULL;
-
 void wxSimpleCheckBox::OnPaint( wxPaintEvent& WXUNUSED(event) )
 {
     wxRect rect(GetClientSize());