diff --git a/contrib/package/luci/Makefile b/contrib/package/luci/Makefile
index 17f485b189..362f2ac540 100644
--- a/contrib/package/luci/Makefile
+++ b/contrib/package/luci/Makefile
@@ -545,7 +545,7 @@ $(eval $(call translation,english,English))
 $(eval $(call translation,french,French (by Florian Fainelli)))
 $(eval $(call translation,italian,Italian (by Matteo Croce)))
 $(eval $(call translation,russian,Russian (by Skryabin Dmitry)))
-$(eval $(call translation,portuguese_brazilian,Portuguese (Brazilian) (by Carlos Cesario)))
+$(eval $(call translation,portuguese-brazilian,Portuguese (Brazilian) (by Carlos Cesario)))
 $(eval $(call translation,chinese,Chinese (by Chinese Translators)))
 $(eval $(call translation,japanese,Japanese (by Tsukasa Hamano)))
 $(eval $(call translation,greek,Greek (by Vasilis Tsiligiannis)))
diff --git a/i18n/portuguese_brazilian/Makefile b/i18n/portuguese-brazilian/Makefile
similarity index 100%
rename from i18n/portuguese_brazilian/Makefile
rename to i18n/portuguese-brazilian/Makefile
diff --git a/i18n/portuguese_brazilian/ipkg/postinst b/i18n/portuguese-brazilian/ipkg/postinst
similarity index 100%
rename from i18n/portuguese_brazilian/ipkg/postinst
rename to i18n/portuguese-brazilian/ipkg/postinst
diff --git a/i18n/portuguese_brazilian/root/etc/uci-defaults/luci-i18n-portuguese_brazilian b/i18n/portuguese-brazilian/root/etc/uci-defaults/luci-i18n-portuguese_brazilian
similarity index 100%
rename from i18n/portuguese_brazilian/root/etc/uci-defaults/luci-i18n-portuguese_brazilian
rename to i18n/portuguese-brazilian/root/etc/uci-defaults/luci-i18n-portuguese_brazilian