diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/schema/symfony-1.0.xsd b/src/Symfony/Bundle/FrameworkBundle/Resources/config/schema/symfony-1.0.xsd
index 7d9828eeb2351..bcf3a4f9e60fc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/schema/symfony-1.0.xsd
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/schema/symfony-1.0.xsd
@@ -295,6 +295,7 @@
     <xsd:simpleType name="email-validation-mode">
         <xsd:restriction base="xsd:string">
             <xsd:enumeration value="html5" />
+            <xsd:enumeration value="html5-allow-no-tld" />
             <xsd:enumeration value="loose" />
             <xsd:enumeration value="strict" />
         </xsd:restriction>