1 files changed, 2 insertions, 1 deletions
diff --git a/compile.c b/compile.c
index 70db48c6a0..e0ca056cd1 100644
--- a/compile.c
+++ b/compile.c
@@ -1276,7 +1276,8 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *optargs, NODE *node_args)
 	}
 
 	if (iseq->type == ISEQ_TYPE_BLOCK) {
-	    if (iseq->arg_opts == 0 && iseq->arg_post_len == 0 && iseq->arg_rest == -1) {
+	    if (iseq->arg_opts == 0 && iseq->arg_post_len == 0 &&
+		iseq->arg_rest == -1 && iseq->arg_keyword == -1) {
 		if (iseq->argc == 1 && last_comma == 0) {
 		    /* {|a|} */
 		    iseq->arg_simple |= 0x02;