diff --git a/frappe/core/doctype/user/user.py b/frappe/core/doctype/user/user.py
index 98cadc0098..81b2bec376 100644
--- a/frappe/core/doctype/user/user.py
+++ b/frappe/core/doctype/user/user.py
@@ -845,7 +845,7 @@ def get_all_roles():
 @frappe.whitelist()
 def get_roles(arg=None):
 	"""get roles for a user"""
-	return frappe.get_roles(frappe.form_dict["uid"])
+	return frappe.get_roles(frappe.form_dict.get("uid", frappe.session.user))
 
 
 @frappe.whitelist()