diff --git a/db_scripts/diff/15787.down b/db_scripts/diff/15787.down
new file mode 100644
index 00000000..315237d0
--- /dev/null
+++ b/db_scripts/diff/15787.down
@@ -0,0 +1,5 @@
+USE provisioning;
+
+ALTER TABLE voip_preferences_enum DROP FOREIGN KEY `pref_id_fk`;
+ALTER TABLE voip_preferences_enum ADD CONSTRAINT `voip_preferences_enum_ibfk_1` FOREIGN KEY (`preference_id`) REFERENCES `voip_preferences` (`id`);
+
diff --git a/db_scripts/diff/15787.up b/db_scripts/diff/15787.up
new file mode 100644
index 00000000..28b07c54
--- /dev/null
+++ b/db_scripts/diff/15787.up
@@ -0,0 +1,9 @@
+USE provisioning;
+SET autocommit=0;
+
+DELETE from voip_preferences_enum where preference_id NOT IN (select id from voip_preferences);
+
+ALTER TABLE voip_preferences_enum DROP FOREIGN KEY `voip_preferences_enum_ibfk_1`;
+ALTER TABLE voip_preferences_enum ADD CONSTRAINT `pref_id_fk` FOREIGN KEY (`preference_id`) REFERENCES `voip_preferences` (`id`) ON UPDATE CASCADE ON DELETE CASCADE;
+
+COMMIT;