diff --git a/importlib_resources/tests/test_functional.py b/importlib_resources/tests/test_functional.py
index 69706cf..255bd13 100644
--- a/importlib_resources/tests/test_functional.py
+++ b/importlib_resources/tests/test_functional.py
@@ -82,7 +82,7 @@ def test_read_text(self):
                 'utf-16.file',
                 errors='backslashreplace',
             ),
-            'Hello, UTF-16 world!\n'.encode('utf-16').decode(
+            '\ufeffHello, UTF-16 world!\n'.encode('utf-16-le').decode(
                 errors='backslashreplace',
             ),
         )
@@ -130,7 +130,7 @@ def test_open_text(self):
         ) as f:
             self.assertEqual(
                 f.read(),
-                'Hello, UTF-16 world!\n'.encode('utf-16').decode(
+                '\ufeffHello, UTF-16 world!\n'.encode('utf-16-le').decode(
                     errors='backslashreplace',
                 ),
             )