diff --git a/lib/schemas/contact-ee-1.1.xsd b/lib/schemas/contact-ee-1.1.xsd
index 2ecda8304..a2f1b2886 100644
--- a/lib/schemas/contact-ee-1.1.xsd
+++ b/lib/schemas/contact-ee-1.1.xsd
@@ -96,7 +96,7 @@
         <element name="name" type="contact:postalLineType"/>
         <element name="org" type="contact:optPostalLineType"
          minOccurs="0"/>
-        <element name="addr" type="contact:addrType"/>
+        <element name="addr" type="contact:addrType" minOccurs="0"/>
       </sequence>
       <attribute name="type" type="contact:postalInfoEnumType"/>
     </complexType>