diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 6562075..bf6ad49 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -305,7 +305,7 @@
 
 		if pos:
 			self.allow_print_before_pay = pos.allow_print_before_pay
-			
+
 			if not for_validate and not self.customer:
 				self.customer = pos.customer