diff --git a/src/Symfony/Component/Routing/Loader/schema/routing/routing-1.0.xsd b/src/Symfony/Component/Routing/Loader/schema/routing/routing-1.0.xsd
index a9554e64df..2c88a60bd3 100644
--- a/src/Symfony/Component/Routing/Loader/schema/routing/routing-1.0.xsd
+++ b/src/Symfony/Component/Routing/Loader/schema/routing/routing-1.0.xsd
@@ -29,7 +29,6 @@
     <xsd:attribute name="resource" type="xsd:string" />
     <xsd:attribute name="type" type="xsd:string" />
     <xsd:attribute name="prefix" type="xsd:string" />
-    <xsd:attribute name="class" type="xsd:string" />
   </xsd:complexType>
 
   <xsd:complexType name="element" mixed="true">