diff --git a/schema/pgsql-migrations/upgrade_80.sql b/schema/pgsql-migrations/upgrade_80.sql
new file mode 100644
index 00000000..074af1cf
--- /dev/null
+++ b/schema/pgsql-migrations/upgrade_80.sql
@@ -0,0 +1,11 @@
+ALTER TABLE icinga_timeperiod_range
+  DROP CONSTRAINT icinga_timeperiod_range_timeperiod,
+  ADD CONSTRAINT icinga_timeperiod_range_timeperiod
+  FOREIGN KEY (timeperiod_id)
+    REFERENCES icinga_timeperiod (id)
+    ON DELETE CASCADE
+    ON UPDATE CASCADE;
+
+INSERT INTO director_schema_migration
+  (schema_version, migration_time)
+  VALUES (80, NOW());
diff --git a/schema/pgsql.sql b/schema/pgsql.sql
index ed6f8f5a..09b6e4b3 100644
--- a/schema/pgsql.sql
+++ b/schema/pgsql.sql
@@ -296,7 +296,7 @@ CREATE TABLE icinga_timeperiod_range (
   CONSTRAINT icinga_timeperiod_range_timeperiod
   FOREIGN KEY (timeperiod_id)
     REFERENCES icinga_timeperiod (id)
-    ON DELETE RESTRICT
+    ON DELETE CASCADE
     ON UPDATE CASCADE
 );
 
@@ -1415,4 +1415,4 @@ CREATE UNIQUE INDEX notification_inheritance ON icinga_notification_inheritance
 -- set current schema version
 INSERT INTO director_schema_migration
   (schema_version, migration_time)
-  VALUES (79, NOW());
+  VALUES (80, NOW());