diff --git a/i18nlangtag/source/languagetag/languagetag.cxx b/i18nlangtag/source/languagetag/languagetag.cxx
index 3a15ecc1aaad..68ee64c6208e 100644
--- a/i18nlangtag/source/languagetag/languagetag.cxx
+++ b/i18nlangtag/source/languagetag/languagetag.cxx
@@ -301,8 +301,6 @@ private:
     void                convertLangToLocale();
     void                convertLangToBcp47();
 
-    void                convertFromRtlLocale();
-
     /** @return whether BCP 47 language tag string was changed. */
     bool                canonicalize();