diff --git a/tests/metadata.TestCase b/tests/metadata.TestCase
index 33d18308..9dfe2bbc 100755
--- a/tests/metadata.TestCase
+++ b/tests/metadata.TestCase
@@ -42,7 +42,7 @@ class MetadataTest(unittest.TestCase):
             savepath = os.path.join('metadata', appid + '.pickle')
             frommeta = app.field_dict()
             self.assertTrue(appid in apps)
-            with open(savepath, 'r') as f:
+            with open(savepath, 'rb') as f:
                 frompickle = pickle.load(f)
             self.assertEquals(frommeta, frompickle)
             # Uncomment to overwrite