diff --git a/inc/CalDAVRequest.php b/inc/CalDAVRequest.php
index d9ce5c17..32f77ee0 100644
--- a/inc/CalDAVRequest.php
+++ b/inc/CalDAVRequest.php
@@ -506,7 +506,7 @@ EOSQL;
       $this->supported_reports = array_merge(
         $this->supported_reports,
         array(
-//          'urn:ietf:params:xml:ns:carddav:addressbook-query' => '',
+          'urn:ietf:params:xml:ns:carddav:addressbook-query' => '',
           'urn:ietf:params:xml:ns:carddav:addressbook-multiget' => ''
         )
       );
diff --git a/inc/DAVResource.php b/inc/DAVResource.php
index cb419ba0..baf583f8 100644
--- a/inc/DAVResource.php
+++ b/inc/DAVResource.php
@@ -795,7 +795,7 @@ EOQRY;
       $this->supported_reports = array_merge(
         $this->supported_reports,
         array(
-//          'urn:ietf:params:xml:ns:carddav:addressbook-query' => '',
+          'urn:ietf:params:xml:ns:carddav:addressbook-query' => '',
           'urn:ietf:params:xml:ns:carddav:addressbook-multiget' => ''
         )
       );