1 files changed, 1 insertions, 1 deletions

diff --git a/src/coding.c b/src/coding.c
index bcedd7f5eeb..17cb77e28df 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -8420,7 +8420,7 @@ Lisp_Object
 from_unicode_buffer (const wchar_t *wstr)
 {
   /* We get one of the two final null bytes for free.  */
-  prtdiff_t len = 1 + sizeof (wchar_t) * wcslen (wstr);
+  ptrdiff_t len = 1 + sizeof (wchar_t) * wcslen (wstr);
   AUTO_STRING_WITH_LEN (str, (char *) wstr, len);
   return from_unicode (str);
 }