1 files changed, 1 insertions, 0 deletions

diff --git a/src/gtkutil.c b/src/gtkutil.c
index c154797735e..04d05d2a630 100644
--- a/src/gtkutil.c
+++ b/src/gtkutil.c
@@ -4219,6 +4219,7 @@ xg_make_tool_item (FRAME_PTR f,
   GtkToolItem *ti = gtk_tool_item_new ();
   GtkWidget *vb = horiz ? gtk_hbox_new (FALSE, 0) : gtk_vbox_new (FALSE, 0);
   GtkWidget *wb = gtk_button_new ();
+  /* The eventbox is here so we can have tooltips on disabled items.  */
   GtkWidget *weventbox = gtk_event_box_new ();
 
   if (wimage && !text_image)