diff --git a/dix/dixutils.c b/dix/dixutils.c
index 5cede5f43..8278d444b 100644
--- a/dix/dixutils.c
+++ b/dix/dixutils.c
@@ -165,16 +165,6 @@ ISOLatin1ToLower (unsigned char source)
 }
 
 
-void
-CopyISOLatin1Lowered(unsigned char *dest, unsigned char *source, int length)
-{
-    int i;
-
-    for (i = 0; i < length; i++, source++, dest++)
-	*dest = ISOLatin1ToLower (*source);
-    *dest = '\0';
-}
-
 int
 CompareISOLatin1Lowered(unsigned char *s1, int s1len, 
 			unsigned char *s2, int s2len)
diff --git a/include/dix.h b/include/dix.h
index 9fd2ed8f8..ed3acb6c4 100644
--- a/include/dix.h
+++ b/include/dix.h
@@ -173,11 +173,6 @@ extern _X_EXPORT void MarkClientException(
 extern _X_HIDDEN Bool CreateConnectionBlock(void);
 /* dixutils.c */
 
-extern _X_EXPORT void CopyISOLatin1Lowered(
-    unsigned char * /*dest*/,
-    unsigned char * /*source*/,
-    int /*length*/);
-
 extern _X_EXPORT int CompareISOLatin1Lowered(
     unsigned char * /*a*/,
     int alen,