diff --git a/src/lang/en/validation.php b/src/lang/en_US/validation.php
similarity index 100%
rename from src/lang/en/validation.php
rename to src/lang/en_US/validation.php
diff --git a/src/lang/es-cl/validation.php b/src/lang/es_CL/validation.php
similarity index 100%
rename from src/lang/es-cl/validation.php
rename to src/lang/es_CL/validation.php
diff --git a/src/lang/pt-br/validation.php b/src/lang/pt_BR/validation.php
similarity index 100%
rename from src/lang/pt-br/validation.php
rename to src/lang/pt_BR/validation.php
diff --git a/src/lang/ro-md/validation.php b/src/lang/ro_MD/validation.php
similarity index 100%
rename from src/lang/ro-md/validation.php
rename to src/lang/ro_MD/validation.php
diff --git a/src/lang/sr-rs/validation.php b/src/lang/sr_RS/validation.php
similarity index 100%
rename from src/lang/sr-rs/validation.php
rename to src/lang/sr_RS/validation.php
diff --git a/src/lang/zh-tw/validation.php b/src/lang/zh_TW/validation.php
similarity index 100%
rename from src/lang/zh-tw/validation.php
rename to src/lang/zh_TW/validation.php