1 files changed, 1 insertions, 1 deletions
diff --git a/vm.c b/vm.c
index 69b594f950..ad0d8505f7 100644
--- a/vm.c
+++ b/vm.c
@@ -2288,7 +2288,7 @@ vm_define_method(rb_thread_t *th, VALUE obj, ID id, VALUE iseqval,
     GetISeqPtr(iseqval, miseq);
 
     if (miseq->klass) {
-	RB_GC_GUARD(iseqval) = rb_iseq_clone(iseqval, 0);
+	iseqval = rb_iseq_clone(iseqval, 0);
 	GetISeqPtr(iseqval, miseq);
     }