diff --git a/tests/test_coder.py b/tests/test_coder.py
index c6bb655a5..b3fcdeaa4 100644
--- a/tests/test_coder.py
+++ b/tests/test_coder.py
@@ -20,8 +20,9 @@ class TestCoder(unittest.TestCase):
         # Call the check_for_file_mentions method
         result = coder.check_for_file_mentions("Please check file1.txt and file2.py")
 
-        # Check if the result is as expected
-        self.assertEqual(result, "Added files: file1.txt, file2.py")
+        # Check if coder.abs_fnames contains both files
+        expected_files = {os.path.abspath("file1.txt"), os.path.abspath("file2.py")}
+        self.assertEqual(coder.abs_fnames, expected_files)
 
 if __name__ == "__main__":
     unittest.main()