1 files changed, 1 insertions, 1 deletions

diff --git a/src/alloc.c b/src/alloc.c
index de1f11050bc..b1208c359e5 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -1672,7 +1672,7 @@ Both LENGTH and INIT must be numbers.  */)
   CHECK_NUMBER (init);
 
   c = XINT (init);
-  if (SINGLE_BYTE_CHAR_P (c))
+  if (ASCII_CHAR_P (c))
     {
       nbytes = XINT (length);
       val = make_uninit_string (nbytes);