diff --git a/erpnext/stock/doctype/item_attribute/item_attribute.py b/erpnext/stock/doctype/item_attribute/item_attribute.py
index 018d525..ac4c313 100644
--- a/erpnext/stock/doctype/item_attribute/item_attribute.py
+++ b/erpnext/stock/doctype/item_attribute/item_attribute.py
@@ -75,11 +75,9 @@
 		values, abbrs = [], []
 		for d in self.item_attribute_values:
 			if d.attribute_value.lower() in map(str.lower, values):
-				frappe.throw(
-					_("Attribute value: {0} must appear only once").format(d.attribute_value.title()))
+				frappe.throw(_("Attribute value: {0} must appear only once").format(d.attribute_value.title()))
 			values.append(d.attribute_value)
 
 			if d.abbr.lower() in map(str.lower, abbrs):
-				frappe.throw(
-					_("Abbreviation: {0} must appear only once").format(d.abbr.title()))
+				frappe.throw(_("Abbreviation: {0} must appear only once").format(d.abbr.title()))
 			abbrs.append(d.abbr)