diff --git a/vdirsyncer/storage/dav.py b/vdirsyncer/storage/dav.py
index 2dfa13c..586c0dc 100644
--- a/vdirsyncer/storage/dav.py
+++ b/vdirsyncer/storage/dav.py
@@ -283,7 +283,7 @@ class CaldavStorage(DavStorage):
 
         start_date = datetime.now() - timedelta(days=365)
         end_date = datetime.now() + timedelta(days=365)
-        
+
     Either both or none have to be specified. The default is to synchronize
     everything.