1 files changed, 1 insertions, 1 deletions
diff --git a/io.c b/io.c
index 35c406a2a3..4e9c84f3ed 100644
--- a/io.c
+++ b/io.c
@@ -5311,7 +5311,7 @@ argf_read(int argc, VALUE *argv)
     VALUE tmp, str, length;
     long len = 0;
 
-    rb_scan_args(argc, argv, "11", &length, &str);
+    rb_scan_args(argc, argv, "02", &length, &str);
     if (!NIL_P(length)) {
 	len = NUM2LONG(argv[0]);
     }