diff --git a/src/modules/illume2/e_illume.h b/src/modules/illume2/e_illume.h
index 2f5860eb3..44b2be9b2 100644
--- a/src/modules/illume2/e_illume.h
+++ b/src/modules/illume2/e_illume.h
@@ -346,6 +346,7 @@ EAPI Eina_Bool e_illume_border_is_qt_frame(E_Border *bd);
 EAPI Eina_Bool e_illume_border_is_fullscreen(E_Border *bd);
 EAPI Eina_Bool e_illume_border_is_conformant(E_Border *bd);
 EAPI Eina_Bool e_illume_border_is_quickpanel(E_Border *bd);
+EAPI Eina_Bool e_illume_border_is_fixed_size(E_Border *bd);
 
 EAPI void e_illume_border_min_get(E_Border *bd, int *w, int *h);
 EAPI E_Border *e_illume_border_at_xy_get(E_Zone *zone, int x, int y);