diff --git a/isbnlib/dev/webquery.py b/isbnlib/dev/webquery.py
index b56c1817..9c3216c5 100644
--- a/isbnlib/dev/webquery.py
+++ b/isbnlib/dev/webquery.py
@@ -38,7 +38,7 @@ def check_data(self, data_checker=None):  # pragma: no cover
 
     def parse_data(self, parser=json.loads):
         """Parse the data (default JSON -> PY)."""
-        if parser is None:
+        if parser is None:  # pragma: no cover
             return self.data
         return parser(self.data)   # <-- data is now unicode