diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 2fd5ca4..8c6616e 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -15,6 +15,7 @@ Version 0.4.0
 *yet to be released*
 
 - The ``passwordeval`` parameter has been renamed to ``passwordconfig``.
+- The old way of writing certain config values such as lists is now gone.
 - Collection discovery has been rewritten. Old configuration files should be
   compatible with it, but vdirsyncer now caches the results of the collection
   discovery. You have to run ``vdirsyncer discover`` if collections were added
diff --git a/vdirsyncer/cli/utils.py b/vdirsyncer/cli/utils.py
index 010293b..76ad70c 100644
--- a/vdirsyncer/cli/utils.py
+++ b/vdirsyncer/cli/utils.py
@@ -95,19 +95,6 @@ def validate_section_name(name, section_type):
                                                 chars_display))
 
 
-def _parse_old_config_list_value(d, key):
-    value = d.get(key, [])
-    if isinstance(value, str):
-        # XXX: Deprecation
-        old_form = value
-        value = list(filter(bool, (x.strip() for x in value.split(','))))
-        cli_logger.warning(
-            '{!r} is deprecated, please use:\n{} = {}\n'
-            'The old form will be removed in 0.4.0.'
-            .format(old_form, key, json.dumps(value)))
-    return value
-
-
 def get_status_name(pair, collection):
     if collection is None:
         return pair
@@ -201,7 +188,7 @@ def _get_coll(pair_name, storage_name, collection, discovered, config):
 def _collections_for_pair_impl(status_path, name_a, name_b, pair_name,
                                config_a, config_b, pair_options):
 
-    shortcuts = set(_parse_old_config_list_value(pair_options, 'collections'))
+    shortcuts = set(pair_options.get('collections', ()))
     if not shortcuts:
         yield None, (config_a, config_b)
     else:
diff --git a/vdirsyncer/storage/dav.py b/vdirsyncer/storage/dav.py
index 2208ae7..4c78087 100644
--- a/vdirsyncer/storage/dav.py
+++ b/vdirsyncer/storage/dav.py
@@ -571,18 +571,8 @@ class CaldavStorage(DavStorage):
     def __init__(self, start_date=None, end_date=None,
                  item_types=('VTODO', 'VEVENT'), **kwargs):
         super(CaldavStorage, self).__init__(**kwargs)
-        if isinstance(item_types, str):
-            orig_item_types = item_types
-            item_types = list(filter(
-                bool, (x.strip() for x in item_types.split(','))
-            ))
-
-            # XXX: Deprecation
-            import json
-            dav_logger.warning(
-                '{!r} is deprecated, please use:\nitem_types = {}\n'
-                'The old form will be removed in 0.4.0.'
-                .format(orig_item_types, json.dumps(item_types)))
+        if not isinstance(item_types, (list, tuple)):
+            raise ValueError('item_types must be a list.')
 
         self.item_types = tuple(item_types)
         if (start_date is None) != (end_date is None):