diff --git a/interface/wx/window.h b/interface/wx/window.h
index e3780555a2..4ac6a5b0a3 100644
--- a/interface/wx/window.h
+++ b/interface/wx/window.h
@@ -1423,8 +1423,14 @@ public:
     //@{
 
     /**
-        Clears the window by filling it with the current background colour. Does not
-        cause an erase background event to be generated.
+        Clears the window by filling it with the current background colour.
+
+        Does not cause an erase background event to be generated.
+
+        Notice that this uses wxClientDC to draw on the window and the results
+        of doing it while also drawing on wxPaintDC for this window are
+        undefined. Hence this method shouldn't be used from EVT_PAINT handlers,
+        just use wxDC::Clear() on the wxPaintDC you already use there instead.
     */
     virtual void ClearBackground();
 
diff --git a/samples/image/image.cpp b/samples/image/image.cpp
index 9a99f1487f..464d3f2733 100644
--- a/samples/image/image.cpp
+++ b/samples/image/image.cpp
@@ -185,11 +185,8 @@ private:
     {
         wxPaintDC dc(this);
 
-#ifndef __WXOSX__
-        // on OSX the immediate Update from within ClearBackground leads to a recursion
         if ( GetMenuBar()->IsChecked(ID_PAINT_BG) )
-            ClearBackground();
-#endif
+            dc.Clear();
 
         dc.SetUserScale(m_zoom, m_zoom);