diff --git a/tests/test_article_only.py b/tests/test_article_only.py
index 87e623c..5d5b813 100644
--- a/tests/test_article_only.py
+++ b/tests/test_article_only.py
@@ -9,7 +9,9 @@ SAMPLES = os.path.join(os.path.dirname(__file__), 'samples')
 
 def load_sample(filename):
     """Helper to get the content out of the sample files"""
-    return open(os.path.join(SAMPLES, filename)).read()
+    with open(os.path.join(SAMPLES, filename)) as f:
+        html = f.read()
+    return html
 
 
 class TestArticleOnly(unittest.TestCase):