diff --git a/frappe/patches/v7_0/cleanup_list_settings.py b/frappe/patches/v7_0/cleanup_list_settings.py
index ef12def852..711b908c34 100644
--- a/frappe/patches/v7_0/cleanup_list_settings.py
+++ b/frappe/patches/v7_0/cleanup_list_settings.py
@@ -7,6 +7,8 @@ def execute():
 	for ls in list_settings:
 		if ls and ls.data:
 			data = json.loads(ls.data)
+			if not data.has_key("fields"):
+				continue
 			fields = data["fields"]
 			for field in fields:
 				if "name as" in field:
@@ -15,4 +17,4 @@ def execute():
 			
 			frappe.db.sql("update __ListSettings set data = %s where user=%s and doctype=%s", 
 				(json.dumps(data), ls.user, ls.doctype))
-		
\ No newline at end of file
+