diff --git a/erpnext/selling/doctype/customer/customer.py b/erpnext/selling/doctype/customer/customer.py
index 3b9d675..d797632 100644
--- a/erpnext/selling/doctype/customer/customer.py
+++ b/erpnext/selling/doctype/customer/customer.py
@@ -9,7 +9,7 @@
 from frappe.utils import flt, cint, cstr
 from frappe.desk.reportview import build_match_conditions
 from erpnext.utilities.transaction_base import TransactionBase
-from erpnext.accounts.party import validate_party_accounts, get_dashboard_info # keep this
+from erpnext.accounts.party import validate_party_accounts, get_dashboard_info, get_timeline_data # keep this
 from frappe.contacts.address_and_contact import load_address_and_contact, delete_contact_and_address
 
 class Customer(TransactionBase):