diff --git a/include/wx/gtk/scrolwin.h b/include/wx/gtk/scrolwin.h
index bcfb3940df..3023df7fc4 100644
--- a/include/wx/gtk/scrolwin.h
+++ b/include/wx/gtk/scrolwin.h
@@ -127,7 +127,7 @@ public:
 
     // Override this function if you don't want to have wxScrolledWindow
     // automatically change the origin according to the scroll position.
-    void PrepareDC(wxDC& dc) { DoPrepareDC(); }
+    void PrepareDC(wxDC& dc) { DoPrepareDC(dc); }
 
     // lay out the window and its children
     virtual bool Layout();
diff --git a/include/wx/gtk1/scrolwin.h b/include/wx/gtk1/scrolwin.h
index bcfb3940df..3023df7fc4 100644
--- a/include/wx/gtk1/scrolwin.h
+++ b/include/wx/gtk1/scrolwin.h
@@ -127,7 +127,7 @@ public:
 
     // Override this function if you don't want to have wxScrolledWindow
     // automatically change the origin according to the scroll position.
-    void PrepareDC(wxDC& dc) { DoPrepareDC(); }
+    void PrepareDC(wxDC& dc) { DoPrepareDC(dc); }
 
     // lay out the window and its children
     virtual bool Layout();