diff --git a/com_oauthserver/administrator/sql/uninstall.mysql.utf8.sql b/com_oauthserver/administrator/sql/uninstall.mysql.utf8.sql
index e69de29..9121207 100644
--- a/com_oauthserver/administrator/sql/uninstall.mysql.utf8.sql
+++ b/com_oauthserver/administrator/sql/uninstall.mysql.utf8.sql
@@ -0,0 +1,4 @@
+drop table if exists `#__webmasterskaya_oauthserver_access_tokens`;
+drop table if exists `#__webmasterskaya_oauthserver_authorization_codes`;
+drop table if exists `#__webmasterskaya_oauthserver_clients`;
+drop table if exists `#__webmasterskaya_oauthserver_refresh_tokens`;
\ No newline at end of file