diff --git a/modules/um_callerid.c b/modules/um_callerid.c
index 452b7b96..44bf52f0 100644
--- a/modules/um_callerid.c
+++ b/modules/um_callerid.c
@@ -49,7 +49,7 @@ um_callerid_modinit(void)
 	user_modes['g'] = find_umode_slot();
 	construct_umodebuf();
 
-        add_isupport("CALLERID", isupport_stringptr, "g");
+	add_isupport("CALLERID", isupport_string, "g");
 
 	return 0;
 }