diff --git a/application/src/main/data/upgrade/1.5.0/schema_update.sql b/application/src/main/data/upgrade/1.5.0/schema_update.sql
index 83f746a..f16e334 100644
--- a/application/src/main/data/upgrade/1.5.0/schema_update.sql
+++ b/application/src/main/data/upgrade/1.5.0/schema_update.sql
@@ -39,3 +39,6 @@ CREATE TABLE IF NOT EXISTS rule_node (
DROP TABLE rule;
DROP TABLE plugin;
+
+DELETE FROM alarm WHERE originator_type = 3 OR originator_type = 4;
+UPDATE alarm SET originator_type = (originator_type - 2) where originator_type > 2;
