diff --git a/erpnext/manufacturing/doctype/bom_update_tool/test_bom_update_tool.py b/erpnext/manufacturing/doctype/bom_update_tool/test_bom_update_tool.py
index b0851a6..154addf 100644
--- a/erpnext/manufacturing/doctype/bom_update_tool/test_bom_update_tool.py
+++ b/erpnext/manufacturing/doctype/bom_update_tool/test_bom_update_tool.py
@@ -22,4 +22,9 @@
 		update_tool.replace_bom()
 
 		self.assertFalse(frappe.db.sql("select name from `tabBOM Item` where bom_no=%s", current_bom))
-		self.assertTrue(frappe.db.sql("select name from `tabBOM Item` where bom_no=%s", bom_doc.name))
\ No newline at end of file
+		self.assertTrue(frappe.db.sql("select name from `tabBOM Item` where bom_no=%s", bom_doc.name))
+
+		# reverse, as it affects other testcases
+		update_tool.current_bom = bom_doc.name
+		update_tool.new_bom = current_bom
+		update_tool.replace_bom()
\ No newline at end of file