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-rw-r--r--locale/programs/localedef.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/locale/programs/localedef.c b/locale/programs/localedef.c
index 98443b8e2d..5a7035dc13 100644
--- a/locale/programs/localedef.c
+++ b/locale/programs/localedef.c
@@ -558,7 +558,7 @@ normalize_codeset (codeset, name_len)
 
       for (cnt = 0; cnt < name_len; ++cnt)
 	if (isalpha (codeset[cnt]))
-	  *wp++ = tolower (codeset[cnt]);
+	  *wp++ = _tolower (codeset[cnt]);
 	else if (isdigit (codeset[cnt]))
 	  *wp++ = codeset[cnt];