diff --git a/include/wx/propgrid/manager.h b/include/wx/propgrid/manager.h
index 1ecbf84e88..26ff6a8688 100644
--- a/include/wx/propgrid/manager.h
+++ b/include/wx/propgrid/manager.h
@@ -163,7 +163,8 @@ protected:
     */
     virtual void DoSetSplitterPosition( int pos,
                                         int splitterColumn = 0,
-                                        bool allPages = false );
+                                        bool allPages = false,
+                                        bool fromAutoCenter = false );
 
     /** Propagate to other pages.
     */
diff --git a/src/propgrid/manager.cpp b/src/propgrid/manager.cpp
index c156cb3281..9c69c43d8d 100644
--- a/src/propgrid/manager.cpp
+++ b/src/propgrid/manager.cpp
@@ -207,7 +207,10 @@ void wxPropertyGridPage::SetSplitterPosition( int splitterPos, int col )
         DoSetSplitterPosition(splitterPos, col, false);
 }
 
-void wxPropertyGridPage::DoSetSplitterPosition( int pos, int splitterColumn, bool allPages )
+void wxPropertyGridPage::DoSetSplitterPosition( int pos,
+                                                int splitterColumn,
+                                                bool allPages,
+                                                bool WXUNUSED(fromAutoCenter) )
 {
     if ( allPages && m_manager->GetPageCount() )
         m_manager->SetSplitterPosition( pos, splitterColumn );