diff --git a/helpdesk/helpdesk/doctype/hd_ticket/hd_ticket.py b/helpdesk/helpdesk/doctype/hd_ticket/hd_ticket.py
index a11128012..076ca7b4d 100644
--- a/helpdesk/helpdesk/doctype/hd_ticket/hd_ticket.py
+++ b/helpdesk/helpdesk/doctype/hd_ticket/hd_ticket.py
@@ -693,3 +693,20 @@ def has_permission(doc, user=None):
 		or is_agent(user)
 		or doc.customer in get_customer(user)
 	)
+
+
+# Custom perms for list query. Only the `WHERE` part
+# https://frappeframework.com/docs/user/en/python-api/hooks#modify-list-query
+def permission_query(user):
+	user = user or frappe.session.user
+	if is_agent(user):
+		return
+	customer = get_customer(user)
+	res = "`tabHD Ticket`.contact={user} OR `tabHD Ticket`.raised_by={user} OR `tabHD Ticket`.owner={user}".format(
+		user=frappe.db.escape(user)
+	)
+	for c in customer:
+		res += ' OR `tabHD Ticket`.customer="{customer}"'.format(
+			customer=frappe.db.escape(c)
+		)
+	return res
diff --git a/helpdesk/hooks.py b/helpdesk/hooks.py
index 63d9545a4..7657fef95 100644
--- a/helpdesk/hooks.py
+++ b/helpdesk/hooks.py
@@ -35,3 +35,7 @@
 has_permission = {
 	"HD Ticket": "helpdesk.helpdesk.doctype.hd_ticket.hd_ticket.has_permission",
 }
+
+permission_query_conditions = {
+	"HD Ticket": "helpdesk.helpdesk.doctype.hd_ticket.hd_ticket.permission_query",
+}