diff --git a/erpnext/stock/doctype/item/item.py b/erpnext/stock/doctype/item/item.py
index 633ead189e7..351f7178c92 100644
--- a/erpnext/stock/doctype/item/item.py
+++ b/erpnext/stock/doctype/item/item.py
@@ -57,6 +57,7 @@ class Item(WebsiteGenerator):
 		self.validate_reorder_level()
 		self.validate_warehouse_for_reorder()
 		self.validate_variants()
+		self.update_item_desc()
 
 		if not self.get("__islocal"):
 			self.old_item_group = frappe.db.get_value(self.doctype, self.name, "item_group")
@@ -69,7 +70,6 @@ class Item(WebsiteGenerator):
 		self.validate_name_with_item_group()
 		self.update_item_price()
 		self.sync_variants()
-		self.update_item_desc()
 
 	def get_context(self, context):
 		context["parent_groups"] = get_parent_item_groups(self.item_group) + \
@@ -436,9 +436,10 @@ class Item(WebsiteGenerator):
 					row.description = desc
 					
 	def update_item_desc(self):
-		frappe.db.sql("""update `tabBOM` set description = %s where item = %s and docstatus < 2""",(self.description, self.name))
-		frappe.db.sql("""update `tabBOM Item` set description = %s where item_code = %s and docstatus < 2""",(self.description, self.name))
-		frappe.db.sql("""update `tabBOM Explosion Item` set description = %s where item_code = %s and docstatus < 2""",(self.description, self.name))		
+		if frappe.db.get_value('BOM',self.name, 'description') != self.description:
+			frappe.db.sql("""update `tabBOM` set description = %s where item = %s and docstatus < 2""",(self.description, self.name))
+			frappe.db.sql("""update `tabBOM Item` set description = %s where item_code = %s and docstatus < 2""",(self.description, self.name))
+			frappe.db.sql("""update `tabBOM Explosion Item` set description = %s where item_code = %s and docstatus < 2""",(self.description, self.name))		
 		
 def validate_end_of_life(item_code, end_of_life=None, verbose=1):
 	if not end_of_life: