1 files changed, 1 insertions, 1 deletions

diff --git a/src/editfns.c b/src/editfns.c
index 2c4bae4808a..df23170df28 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -3314,7 +3314,7 @@ usage: (format STRING &rest OBJECTS)  */)
 
             thissize = 30;
             if (*format == 'c'
-                && (! SINGLE_BYTE_CHAR_P (XINT (args[n]))
+                && (! ASCII_CHAR_P (XINT (args[n]))
                     || XINT (args[n]) == 0))
               {
                 if (! multibyte)