1 files changed, 2 insertions, 1 deletions
diff --git a/eval.c b/eval.c
index f3275ada0b..873d549739 100644
--- a/eval.c
+++ b/eval.c
@@ -1119,7 +1119,8 @@ rb_using_refinement(NODE *cref, VALUE klass, VALUE module)
     c = iclass = rb_include_class_new(module, superclass);
     RCLASS_REFINED_CLASS(c) = klass;
 
-    RCLASS_M_TBL(OBJ_WB_UNPROTECT(c)) = RCLASS_M_TBL(OBJ_WB_UNPROTECT(module));
+    RCLASS_M_TBL_WRAPPER(OBJ_WB_UNPROTECT(c)) =
+	RCLASS_M_TBL_WRAPPER(OBJ_WB_UNPROTECT(module));
 
     module = RCLASS_SUPER(module);
     while (module && module != klass) {