diff --git a/schema/lib/elements/repomirror.xsd b/schema/lib/elements/repomirror.xsd
index 777e81c..531c726 100644
--- a/schema/lib/elements/repomirror.xsd
+++ b/schema/lib/elements/repomirror.xsd
@@ -43,6 +43,7 @@
       <xs:element name="port" minOccurs="0" type="t_net_port"/>
       <xs:element name="path" minOccurs="1" type="t_unix_dirpath"/>
     </xs:all>
+    <xs:attribute name="delayCheck" type="xs:duration" use="optional" default="P0Y0M0W2DT0H0M0S"/>
   </xs:complexType>
 
 </xs:schema>