1 files changed, 1 insertions, 1 deletions
diff --git a/re.c b/re.c
index 49424eb632..34eeaa543c 100644
--- a/re.c
+++ b/re.c
@@ -3141,7 +3141,7 @@ rb_reg_s_last_match(int argc, VALUE *argv)
 {
     VALUE nth;
 
-    if (rb_scan_args(argc, argv, "01", &nth) == 1) {
+    if (argc > 0 && rb_scan_args(argc, argv, "01", &nth) == 1) {
         VALUE match = rb_backref_get();
         int n;
         if (NIL_P(match)) return Qnil;