1 files changed, 2 insertions, 1 deletions

diff --git a/src/print.c b/src/print.c
index 76ce467eed0..ea00a90d37b 100644
--- a/src/print.c
+++ b/src/print.c
@@ -350,7 +350,8 @@ printchar (unsigned int ch, Lisp_Object fun)
    to data in a Lisp string.  Otherwise that is not safe.  */
 
 static void
-strout (char *ptr, int size, int size_byte, Lisp_Object printcharfun, int multibyte)
+strout (const char *ptr, int size, int size_byte, Lisp_Object printcharfun,
+        int multibyte)
 {
   if (size < 0)
     size_byte = size = strlen (ptr);