diff --git a/erpnext/selling/doctype/quotation/quotation.py b/erpnext/selling/doctype/quotation/quotation.py
index 0cab21f..61969fe 100644
--- a/erpnext/selling/doctype/quotation/quotation.py
+++ b/erpnext/selling/doctype/quotation/quotation.py
@@ -288,7 +288,7 @@
 			)
 
 		# sales team
-		for d in customer.get("sales_team", []):
+		for d in customer.get("sales_team") or []:
 			target.append(
 				"sales_team",
 				{