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-rw-r--r--source3/lib/replace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/source3/lib/replace.c b/source3/lib/replace.c
index 57ee6ea11e..120fd3a468 100644
--- a/source3/lib/replace.c
+++ b/source3/lib/replace.c
@@ -390,7 +390,7 @@ char *rep_inet_ntoa(struct in_addr ip)
if (isdigit(c))
c -= '0';
else if (isalpha(c))
- c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+ c -= isupper_ascii(c) ? 'A' - 10 : 'a' - 10;
else
break;
if (c >= base)