1 files changed, 1 insertions, 1 deletions

diff --git a/src/msdos.c b/src/msdos.c
index 55d2fc27490..8cc91c9bae5 100644
--- a/src/msdos.c
+++ b/src/msdos.c
@@ -569,7 +569,7 @@ run_msdos_command (argv, dir, tempin, tempout)
     envv[len] = (char *) 0;
   }
 
-  if (XTYPE (dir) == Lisp_String)
+  if (STRINGP (dir))
     chdir (XSTRING (dir)->data);
   inbak = dup (0);
   outbak = dup (1);