diff --git a/gtk/gtktreeview.c b/gtk/gtktreeview.c
index ef5b948320..09f2067968 100644
--- a/gtk/gtktreeview.c
+++ b/gtk/gtktreeview.c
@@ -1811,6 +1811,8 @@ gtk_tree_view_realize (GtkWidget *widget)
   attributes.height = tree_view->priv->header_height;
   attributes.event_mask = (GDK_EXPOSURE_MASK |
                            GDK_SCROLL_MASK |
+                           GDK_ENTER_NOTIFY_MASK |
+                           GDK_LEAVE_NOTIFY_MASK |
                            GDK_BUTTON_PRESS_MASK |
                            GDK_BUTTON_RELEASE_MASK |
                            GDK_KEY_PRESS_MASK |