diff --git a/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/RESTServer.pm b/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/RESTServer.pm
index 2aeb66c3d..0f483d932 100644
--- a/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/RESTServer.pm
+++ b/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/RESTServer.pm
@@ -211,7 +211,7 @@ sub virtualHosts {
         }
         return $self->sendJSONresponse( $req, $resp );
     }
-    elsif ( $query =~ $virtualHostKeys ) {
+    elsif ( $query =~ qr/^$virtualHostKeys$/o ) {
         $self->logger->debug("Query for $vh/$query key");
 
         # TODO: verify how this is done actually