diff --git a/src/propgrid/manager.cpp b/src/propgrid/manager.cpp
index a5b4dda812..23569a9534 100644
--- a/src/propgrid/manager.cpp
+++ b/src/propgrid/manager.cpp
@@ -1797,7 +1797,7 @@ void wxPropertyGridManager::OnToolbarClick( wxCommandEvent &event )
         if ( DoSelectPage(index) )
         {
             // Event dispatching must be last.
-            m_pPropGrid->SendEvent( wxEVT_PG_PAGE_CHANGED, NULL );
+            m_pPropGrid->SendEvent( wxEVT_PG_PAGE_CHANGED, (wxPGProperty*)NULL );
         }
         else
         {