diff --git a/app/data/__init__.py b/app/data/__init__.py
index 518737b3..6bed4ab3 100644
--- a/app/data/__init__.py
+++ b/app/data/__init__.py
@@ -5,6 +5,7 @@
     'jhu': JhuLocationService(),
 }
 
+
 def data_source(source):
     """
     Retrieves the provided data-source service.
@@ -12,4 +13,4 @@ def data_source(source):
     :returns: The service.
     :rtype: LocationService
     """
-    return data_sources.get(source.lower())
\ No newline at end of file
+    return data_sources.get(source.lower())