1 files changed, 1 insertions, 1 deletions
diff --git a/util.c b/util.c
index 26a35ed398..512b00b47a 100644
--- a/util.c
+++ b/util.c
@@ -642,7 +642,7 @@ ruby_getcwd()
     char *buf = xmalloc(size);
 
     while (!getcwd(buf, size)) {
-	if (errno != ERANGE) rb_sys_fail(buf);
+	if (errno != ERANGE) rb_sys_fail(NULL);
 	size *= 2;
 	buf = xrealloc(buf, size);
     }