1 files changed, 1 insertions, 0 deletions
diff --git a/src/codegen.c b/src/codegen.c
index 7d1751f6a..c7b8e2d74 100644
--- a/src/codegen.c
+++ b/src/codegen.c
@@ -550,6 +550,7 @@ for_body(codegen_scope *s, node *tree)
   codegen(s, tree->cdr->car, VAL);
   /* generate loop-block */
   s = scope_new(s->mrb, s, NULL);
+  push();                       /* push for a block parameter */
 
   lp = loop_push(s, LOOP_FOR);
   lp->pc1 = new_label(s);