diff --git a/src/common/datavcmn.cpp b/src/common/datavcmn.cpp
index 91fa8da281..d7b9b7d7af 100644
--- a/src/common/datavcmn.cpp
+++ b/src/common/datavcmn.cpp
@@ -510,7 +510,7 @@ void wxDataViewVirtualListModel::Reset( unsigned int new_size )
 void wxDataViewVirtualListModel::RowPrepended()
 {
     m_lastIndex++;
-    wxDataViewItem item( NULL );
+    wxDataViewItem item( wxUIntToPtr(1) );
     ItemAdded( wxDataViewItem(0), item );
 }