1 files changed, 1 insertions, 2 deletions
diff --git a/error.c b/error.c
index b8bf252530..c316e88d9c 100644
--- a/error.c
+++ b/error.c
@@ -274,8 +274,7 @@ exc_initialize(argc, argv, exc)
 {
     VALUE mesg;
 
-    rb_scan_args(argc, argv, "01", &mesg);
-    if (NIL_P(mesg)) {
+    if (rb_scan_args(argc, argv, "01", &mesg) == 0) {
 	mesg = str_new(0, 0);
     }
     else {