diff --git a/frappe/tests/test_api.py b/frappe/tests/test_api.py
index a5c76e2698..8d3065982b 100644
--- a/frappe/tests/test_api.py
+++ b/frappe/tests/test_api.py
@@ -419,6 +419,19 @@ class TestResponse(FrappeAPITestCase):
 		self.assertIn("text/csv", response.headers["content-type"])
 		self.assertGreater(cint(response.headers["content-length"]), 0)
 
+		from frappe.desk.utils import provide_binary_file
+		from frappe.utils.response import build_response
+
+		filename = "دفتر الأستاذ العام"
+		encoded_filename = filename.encode("utf-8").decode("unicode-escape", "ignore") + ".xlsx"
+		provide_binary_file(filename, "xlsx", "content")
+
+		response = build_response("binary")
+		self.assertEqual(response.status_code, 200)
+		self.assertEqual(response.headers["content-type"], "application/octet-stream")
+		self.assertGreater(cint(response.headers["content-length"]), 0)
+		self.assertEqual(response.headers["content-disposition"], f'filename="{encoded_filename}"')
+
 
 def generate_admin_keys():
 	from frappe.core.doctype.user.user import generate_keys