diff --git a/vdirsyncer/tests/storage/test_caldav.py b/vdirsyncer/tests/storage/test_caldav.py
index 2077d12..0fde985 100644
--- a/vdirsyncer/tests/storage/test_caldav.py
+++ b/vdirsyncer/tests/storage/test_caldav.py
@@ -2,7 +2,12 @@
 # -*- coding: utf-8 -*-
 '''
     vdirsyncer.tests.storage.test_caldav
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    Using an actual CalDAV server to test the CalDAV storage. Done by using
+    Werkzeug's test client for WSGI apps. While this is pretty fast, Radicale
+    has so much global state such that a clean separation of the unit tests is
+    not guaranteed.
 
     :copyright: (c) 2014 Markus Unterwaditzer
     :license: MIT, see LICENSE for more details.
diff --git a/vdirsyncer/tests/storage/test_filesystem.py b/vdirsyncer/tests/storage/test_filesystem.py
index 7df2d7f..ebcfc7f 100644
--- a/vdirsyncer/tests/storage/test_filesystem.py
+++ b/vdirsyncer/tests/storage/test_filesystem.py
@@ -1,8 +1,8 @@
 
 # -*- coding: utf-8 -*-
 '''
-    vdirsyncer.tests.storage
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    vdirsyncer.tests.storage.filesystem
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
     :copyright: (c) 2014 Markus Unterwaditzer
     :license: MIT, see LICENSE for more details.
diff --git a/vdirsyncer/tests/storage/test_memory.py b/vdirsyncer/tests/storage/test_memory.py
index 9f7e12c..e878cd1 100644
--- a/vdirsyncer/tests/storage/test_memory.py
+++ b/vdirsyncer/tests/storage/test_memory.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 '''
     vdirsyncer.tests.storage.test_memory
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
     :copyright: (c) 2014 Markus Unterwaditzer
     :license: MIT, see LICENSE for more details.