diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf
index 1a99117f93..c3b3365701 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf
@@ -386,6 +386,10 @@
This value is not a valid International Securities Identification Number (ISIN).この値は有効な国際証券識別番号(ISIN)ではありません。
+
+ This value should be a valid expression.
+ 式でなければなりません。
+