diff --git a/ChangeLog_GRUB4DOS.txt b/ChangeLog_GRUB4DOS.txt
index ee06a0dd..7b0f2847 100644
--- a/ChangeLog_GRUB4DOS.txt
+++ b/ChangeLog_GRUB4DOS.txt
@@ -1,3 +1,4 @@
+2014-09-04 fixed a bug in dir();(reported by Steve6375,issue 154).
 2014-09-04 add new command 'raw'.
 2014-08-25 fixed a bug in devread(); extend byte_offset to 64-bit.(reported by Steve6375,issue 194).
 2014-08-22 gpt partition hide/unhide bug fixed.
diff --git a/stage2/disk_io.c b/stage2/disk_io.c
index c1a2bc6c..506c7f32 100644
--- a/stage2/disk_io.c
+++ b/stage2/disk_io.c
@@ -1568,10 +1568,10 @@ dir (char *dirname)
     return 0;
 
   if (*dirname != '/')
-    errnum = ERR_BAD_FILENAME;
+    return !(errnum = ERR_BAD_FILENAME);
 
   if (fsys_type == NUM_FSYS)
-    errnum = ERR_FSYS_MOUNT;
+    return !(errnum = ERR_FSYS_MOUNT);
 
 	if (set_filename(dirname) == 0)
 		return 0;