diff --git a/erpnext/production/doctype/bom/bom.py b/erpnext/production/doctype/bom/bom.py
index 89e4d4b..36df84e 100644
--- a/erpnext/production/doctype/bom/bom.py
+++ b/erpnext/production/doctype/bom/bom.py
@@ -316,9 +316,6 @@
 
 
 	def on_update(self):
-		if self.doc.item != cstr(self.doc.name.split('/')[1]):
-			msgprint("Cannot change Item once the Bill Of Material is created.")
-			raise Exception
 		self.check_recursion()