1 files changed, 1 insertions, 1 deletions
diff --git a/src/tr.c b/src/tr.c
index e18e5588e..214eb2bc9 100644
--- a/src/tr.c
+++ b/src/tr.c
@@ -601,7 +601,7 @@ make_printable_str (char const *s, size_t len)
   for (i = 0; i < len; i++)
     {
       char buf[5];
-      char *tmp = NULL;
+      char const *tmp = NULL;
       unsigned char c = s[i];
 
       switch (c)