diff --git a/application/src/main/data/upgrade/2.1.1/schema_update.cql b/application/src/main/data/upgrade/2.1.1/schema_update.cql
index c6fdf5a..d9ba517 100644
--- a/application/src/main/data/upgrade/2.1.1/schema_update.cql
+++ b/application/src/main/data/upgrade/2.1.1/schema_update.cql
@@ -1,4 +1,4 @@
-/*--
+--
-- Copyright © 2016-2018 The Thingsboard Authors
--
-- Licensed under the Apache License, Version 2.0 (the "License");
@@ -12,7 +12,8 @@
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
---*/
+--
+
DROP MATERIALIZED VIEW IF EXISTS thingsboard.entity_views_by_tenant_and_name;
DROP MATERIALIZED VIEW IF EXISTS thingsboard.entity_views_by_tenant_and_entity;
DROP MATERIALIZED VIEW IF EXISTS thingsboard.entity_views_by_tenant_and_customer;
