diff --git a/src/bin/e_menu.c b/src/bin/e_menu.c
index 2fd934f30..84e70f385 100644
--- a/src/bin/e_menu.c
+++ b/src/bin/e_menu.c
@@ -453,7 +453,7 @@ e_menu_thaw(E_Menu *m)
 }
 
 EAPI void
-e_menu_title_set(E_Menu *m, char *title)
+e_menu_title_set(E_Menu *m, const char *title)
 {
    E_OBJECT_CHECK(m);
    E_OBJECT_TYPE_CHECK(m, E_MENU_TYPE);
@@ -476,7 +476,7 @@ e_menu_title_set(E_Menu *m, char *title)
 }
 
 EAPI void
-e_menu_icon_file_set(E_Menu *m __UNUSED__, char *icon __UNUSED__)
+e_menu_icon_file_set(E_Menu *m __UNUSED__, const char *icon __UNUSED__)
 {
    /* FIXME: support menu icons
       E_OBJECT_CHECK(m);
@@ -485,7 +485,7 @@ e_menu_icon_file_set(E_Menu *m __UNUSED__, char *icon __UNUSED__)
 }
 
 EAPI void
-e_menu_category_set(E_Menu *m, char *category)
+e_menu_category_set(E_Menu *m, const char *category)
 {
    E_OBJECT_CHECK(m);
    E_OBJECT_TYPE_CHECK(m, E_MENU_TYPE);
diff --git a/src/bin/e_menu.h b/src/bin/e_menu.h
index 556279aeb..b50e0a1ca 100644
--- a/src/bin/e_menu.h
+++ b/src/bin/e_menu.h
@@ -168,11 +168,11 @@ EAPI void         e_menu_activate(E_Menu *m, E_Zone *zone, int x, int y, int w,
 EAPI void         e_menu_deactivate(E_Menu *m);
 EAPI int          e_menu_freeze(E_Menu *m);
 EAPI int          e_menu_thaw(E_Menu *m);
-EAPI void         e_menu_title_set(E_Menu *m, char *title);
-EAPI void         e_menu_icon_file_set(E_Menu *m, char *icon);
+EAPI void         e_menu_title_set(E_Menu *m, const char *title);
+EAPI void         e_menu_icon_file_set(E_Menu *m, const char *icon);
 
 /* menu categories functions */
-EAPI void         e_menu_category_set(E_Menu *m, char *category);
+EAPI void         e_menu_category_set(E_Menu *m, const char *category);
 EAPI void         e_menu_category_data_set(char *category, void *data);
 EAPI E_Menu_Category_Callback  *e_menu_category_callback_add(char *category, void (*create) (E_Menu *m, void *category_data, void *data), void (free) (void *data), void *data);
 EAPI void         e_menu_category_callback_del(E_Menu_Category_Callback *cb);