diff --git a/logya/content.py b/logya/content.py
index 4935266..54ed3f3 100644
--- a/logya/content.py
+++ b/logya/content.py
@@ -40,6 +40,7 @@ def content_type(path: Path) -> Union[None, str]:
         return 'html'
     if path.suffix in {'.md', '.markdown'}:
         return 'markdown'
+    return None
 
 
 def create_url(path: Path) -> str:
diff --git a/logya/core.py b/logya/core.py
index 7570560..0aabe80 100644
--- a/logya/core.py
+++ b/logya/core.py
@@ -25,8 +25,9 @@ def __init__(self, dir_site: str = '.', verbose: bool = False):
         for coll in self.collections.values():
             coll['index'] = {}
 
-        # Initialize extensions
+        # Simplify access to these settings.
         self.markdown_extensions = self.settings.get('extensions', {}).get('markdown', [])
+        self.languages = self.settings.get('languages', {})
 
     def build(self):
         """Read content and initialize template environment."""
@@ -82,7 +83,7 @@ def update_collections(self, doc: dict):
                 url = f'/{coll["path"]}/{slugify(value).lower()}/'
 
                 # Prepend language code to URL if language is specified in doc and exists in configuration.
-                if 'language' in doc and doc['language'] in self.settings.get('languages'):
+                if 'language' in doc and doc['language'] in self.languages:
                     url = f'/{doc["language"]}{url}'
 
                 if url in self.doc_index:
diff --git a/logya/server.py b/logya/server.py
index b4faaf0..73efdfd 100644
--- a/logya/server.py
+++ b/logya/server.py
@@ -13,7 +13,7 @@
 class HTTPRequestHandler(http.server.SimpleHTTPRequestHandler):
     """SimpleHTTPRequestHandler based class to return resources."""
 
-    L = None
+    L: Logya
 
     def __init__(self, *args):
         super(HTTPRequestHandler, self).__init__(*args, directory=self.L.paths.public.as_posix())
diff --git a/logya/util.py b/logya/util.py
index 5e356b1..25b0bc3 100644
--- a/logya/util.py
+++ b/logya/util.py
@@ -10,7 +10,7 @@
 try:
     from yaml import CDumper as Dumper, CLoader as Loader
 except ImportError:
-    from yaml import Dumper, Loader
+    from yaml import Dumper, Loader  # type: ignore
 
 
 # Characters not to be used in URLs, allowing some punctuation.
@@ -47,6 +47,7 @@ def get_item(items: list, value: str, attr: str = 'url') -> Union[dict, None]:
     for item in items:
         if item.get(attr) == value:
             return item
+    return None
 
 
 def load_yaml(text: str) -> dict: