diff --git a/gtk/gtkimcontextsimple.c b/gtk/gtkimcontextsimple.c
index d65dbdb3de..93db96b124 100644
--- a/gtk/gtkimcontextsimple.c
+++ b/gtk/gtkimcontextsimple.c
@@ -91,6 +91,8 @@ static GSList *global_tables;
 
 static const guint16 gtk_compose_ignore[] = {
   0, /* Yes, XKB will send us key press events with NoSymbol :( */
+  GDK_KEY_Overlay1_Enable,
+  GDK_KEY_Overlay2_Enable,
   GDK_KEY_Shift_L,
   GDK_KEY_Shift_R,
   GDK_KEY_Control_L,