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-rw-r--r--dix/dixutils.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/dix/dixutils.c b/dix/dixutils.c
index 1e3134663..00bbde67c 100644
--- a/dix/dixutils.c
+++ b/dix/dixutils.c
@@ -167,8 +167,8 @@ ISOLatin1ToLower (unsigned char source)
int
-CompareISOLatin1Lowered(unsigned char *s1, int s1len,
- unsigned char *s2, int s2len)
+CompareISOLatin1Lowered(const unsigned char *s1, int s1len,
+ const unsigned char *s2, int s2len)
{
unsigned char c1, c2;