diff --git a/frappe/desk/doctype/todo/todo.py b/frappe/desk/doctype/todo/todo.py
index 3af97c24c0..77cdfb90db 100644
--- a/frappe/desk/doctype/todo/todo.py
+++ b/frappe/desk/doctype/todo/todo.py
@@ -94,7 +94,7 @@ class ToDo(Document):
 				"ToDo",
 				{
 					"reference_type": self.reference_type,
-					"reference_name": self.reference_name,
+					"reference_name": str(self.reference_name),
 					"status": ("not in", ("Cancelled", "Closed")),
 					"allocated_to": ("is", "set"),
 				},
diff --git a/frappe/desk/form/assign_to.py b/frappe/desk/form/assign_to.py
index d915a4bd3e..3c9e4f6768 100644
--- a/frappe/desk/form/assign_to.py
+++ b/frappe/desk/form/assign_to.py
@@ -82,7 +82,7 @@ def add(args=None, *, ignore_permissions=False):
 					"doctype": "ToDo",
 					"allocated_to": assign_to,
 					"reference_type": args["doctype"],
-					"reference_name": args["name"],
+					"reference_name": str(args["name"]),
 					"description": args.get("description"),
 					"priority": args.get("priority", "Medium"),
 					"status": "Open",