diff --git a/tests/test_cookiecutter_generation.py b/tests/test_cookiecutter_generation.py
index 7d273f44a..0fceb4834 100755
--- a/tests/test_cookiecutter_generation.py
+++ b/tests/test_cookiecutter_generation.py
@@ -168,9 +168,9 @@ def check_paths(paths: Iterable[Path]):
         if is_binary(str(path)):
             continue
 
-        for line in path.open():
-            match = RE_OBJ.search(line)
-            assert match is None, f"cookiecutter variable not replaced in {path}"
+        content = path.read_text()
+        match = RE_OBJ.search(content)
+        assert match is None, f"cookiecutter variable not replaced in {path}"
 
 
 @pytest.mark.parametrize("context_override", SUPPORTED_COMBINATIONS, ids=_fixture_id)