diff --git a/docs/usage.rst b/docs/usage.rst
index 1cc2049..78a5124 100644
--- a/docs/usage.rst
+++ b/docs/usage.rst
@@ -177,8 +177,9 @@ tries
   This only works when the source implementation uses the builtin HTTP client.
 
 httptoken
-  A personal authorization token used to call the url. The type of token depends on the authorization required. 
-
+  A personal authorization token used to fetch the url with the ``Authorization`` header. 
+  The type of token depends on the authorization required. 
+  
   - For Bearer token set : ``Bearer <Your_bearer_token>``
   - For Basic token set : ``Basic <Your_base64_encoded_token>``
 
@@ -282,7 +283,10 @@ url
   The URL of the HTTP request.
 
 xpath
-  A xpath expression used to find the version string
+  An xpath expression used to find the version string.
+
+.. note:: 
+  An additional dependency "lxml" is required
 
 Find with a Command
 ~~~~~~~~~~~~~~~~~~~
diff --git a/nvchecker/util.py b/nvchecker/util.py
index 25c14f1..0181d52 100644
--- a/nvchecker/util.py
+++ b/nvchecker/util.py
@@ -226,12 +226,11 @@ class FunctionWorker(BaseWorker):
     if ua is not None:
       ctx_ua.set(ua)
     httpt = entry.get('httptoken', None)
-    if httpt is not None:
-      ctx_httpt.set(httpt)
-    else:
+    if httpt is None:
       httpt = self.keymanager.get_key('httptoken_'+name)
-      if httpt is not None:
+    if httpt is not None:
         ctx_httpt.set(httpt)
+
     try:
       async with self.task_sem:
         version = await self.func(
diff --git a/nvchecker_source/htmlparser.py b/nvchecker_source/htmlparser.py
index 96f1767..a64f213 100644
--- a/nvchecker_source/htmlparser.py
+++ b/nvchecker_source/htmlparser.py
@@ -2,8 +2,6 @@
 # Copyright (c) 2020 Ypsilik <tt2laurent.maud@gmail.com>, et al.
 # Copyright (c) 2013-2020 lilydjwg <lilydjwg@gmail.com>, et al.
 
-import re
-import sre_constants
 from lxml import html, etree
 
 from nvchecker.api import session, GetVersionError