diff --git a/src/e_mod_main.c b/src/e_mod_main.c
index 4f5d5e8..0716def 100644
--- a/src/e_mod_main.c
+++ b/src/e_mod_main.c
@@ -13,9 +13,9 @@
 static E_Gadcon_Client *_gc_init(E_Gadcon *gc, const char *name, const char *id, const char *style);
 static void             _gc_shutdown(E_Gadcon_Client *gcc);
 static void             _gc_orient(E_Gadcon_Client *gcc, E_Gadcon_Orient orient);
-static const char      *_gc_label(E_Gadcon_Client_Class *client_class);
-static Evas_Object     *_gc_icon(E_Gadcon_Client_Class *client_class, Evas *evas);
-static const char      *_gc_id_new(E_Gadcon_Client_Class *client_class);
+static const char      *_gc_label(const E_Gadcon_Client_Class *client_class);
+static Evas_Object     *_gc_icon(const E_Gadcon_Client_Class *client_class, Evas *evas);
+static const char      *_gc_id_new(const E_Gadcon_Client_Class *client_class);
 
 static const E_Gadcon_Client_Class _gadcon_class =
 {
@@ -199,13 +199,13 @@ _gc_orient(E_Gadcon_Client *gcc, E_Gadcon_Orient orient)
 }
 
 static const char *
-_gc_label(E_Gadcon_Client_Class *client_class)
+_gc_label(const E_Gadcon_Client_Class *client_class)
 {
    return D_("Moon");
 }
 
 static Evas_Object *
-_gc_icon(E_Gadcon_Client_Class *client_class, Evas *evas)
+_gc_icon(const E_Gadcon_Client_Class *client_class, Evas *evas)
 {
    Evas_Object *o;
    char buf[4096];
@@ -217,7 +217,7 @@ _gc_icon(E_Gadcon_Client_Class *client_class, Evas *evas)
 }
 
 static const char *
-_gc_id_new(E_Gadcon_Client_Class *client_class)
+_gc_id_new(const E_Gadcon_Client_Class *client_class)
 {
    return _gadcon_class.name;
 }