diff --git a/pooch/processors.py b/pooch/processors.py
index 483a4a0f..d51618f9 100644
--- a/pooch/processors.py
+++ b/pooch/processors.py
@@ -45,7 +45,8 @@ def __init__(self, members=None, extract_dir=None):
         self.extract_dir = extract_dir
 
     def _all_members(self, fname):
-        """Return all the members in the archive.
+        """
+        Return all the members in the archive.
 
         In the base class, this returns None.
         """