diff --git a/db_scripts/diff/15155.down b/db_scripts/diff/15155.down
new file mode 100644
index 00000000..6c315b7b
--- /dev/null
+++ b/db_scripts/diff/15155.down
@@ -0,0 +1,6 @@
+SET AUTOCOMMIT=0;
+USE provisioning;
+
+alter table autoprov_field_device_lines drop column extension_unit;
+
+COMMIT;
diff --git a/db_scripts/diff/15155.up b/db_scripts/diff/15155.up
new file mode 100644
index 00000000..c7c113a8
--- /dev/null
+++ b/db_scripts/diff/15155.up
@@ -0,0 +1,6 @@
+SET AUTOCOMMIT=0;
+USE provisioning;
+
+alter table autoprov_field_device_lines add column extension_unit tinyint  unsigned not null default 0;
+
+COMMIT;