diff --git a/src/Symfony/Component/Form/Resources/translations/validators.cs.xlf b/src/Symfony/Component/Form/Resources/translations/validators.cs.xlf
index 776da49481..44d597db98 100644
--- a/src/Symfony/Component/Form/Resources/translations/validators.cs.xlf
+++ b/src/Symfony/Component/Form/Resources/translations/validators.cs.xlf
@@ -14,6 +14,10 @@
                 <source>The CSRF token is invalid. Please try to resubmit the form.</source>
                 <target>CSRF token je neplatný. Zkuste prosím znovu odeslat formulář.</target>
             </trans-unit>
+            <trans-unit id="99">
+                <source>This value is not a valid HTML5 color.</source>
+                <target>Tato hodnota není platná HTML5 barva.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>