Index: src/runtime/class.m
==================================================================
--- src/runtime/class.m
+++ src/runtime/class.m
@@ -384,17 +384,17 @@
 
 	/* FIXME: We need a way to free this at objc_exit() */
 	if ((ml = malloc(sizeof(struct objc_method_list))) == NULL)
 		ERROR("Not enough memory to replace method!");
 
-	ml->next = cls->isa->methodlist;
+	ml->next = cls->methodlist;
 	ml->count = 1;
 	ml->methods[0].sel.uid = sel->uid;
 	ml->methods[0].sel.types = types;
 	ml->methods[0].imp = newimp;
 
-	cls->isa->methodlist = ml;
+	cls->methodlist = ml;
 
 	objc_update_dtable(cls);
 
 	objc_global_mutex_unlock();