diff --git a/schema/projects/he_ipv6.xsd b/schema/projects/he_ipv6.xsd
index 1d5453b..1615ee5 100644
--- a/schema/projects/he_ipv6.xsd
+++ b/schema/projects/he_ipv6.xsd
@@ -23,11 +23,9 @@
           <xs:complexType>
             <xs:sequence>
               <xs:element name="tunnel" minOccurs="1" maxOccurs="unbounded" type="e_he_ipv6_tunnel">
-                <xs:unique name="uniq_alloc">
-                  <xs:unique name="uniq_alloc_addr">
-                    <xs:selector xpath="heIPv6:tunnel/alloc"/>
-                    <xs:field xpath="."/>
-                  </xs:unique>
+                <xs:unique name="uniq_alloc_addr">
+                  <xs:selector xpath="heIPv6:tunnel/alloc"/>
+                  <xs:field xpath="."/>
                 </xs:unique>
               </xs:element>
             </xs:sequence>