diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index 8f9221135e..c51baf03f2 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -8039,7 +8039,7 @@ gtk_notebook_reorder_child (GtkNotebook *notebook,
   /* Move around the menu items if necessary */
   gtk_notebook_child_reordered (notebook, page);
 
-  for (list = priv->children, i = 0; list; list = list->next)
+  for (list = priv->children, i = 0; list; list = list->next, i++)
     {
       if (MIN (old_pos, position) <= i && i <= MAX (old_pos, position))
 	gtk_widget_child_notify (((GtkNotebookPage *) list->data)->child, "position");