--- a/localedata/SUPPORTED
+++ b/localedata/SUPPORTED
@@ -385,8 +385,8 @@
 tr_TR.UTF-8/UTF-8 \
 tr_TR/ISO-8859-9 \
 ts_ZA/UTF-8 \
-tt_RU.UTF-8/UTF-8 \
-tt_RU.UTF-8@iqtelif/UTF-8 \
+tt_RU/UTF-8 \
+tt_RU@iqtelif/UTF-8 \
 ug_CN/UTF-8 \
 uk_UA.UTF-8/UTF-8 \
 uk_UA/KOI8-U \
