diff --git a/main.py b/main.py
index 486a6b0..2abd73a 100644
--- a/main.py
+++ b/main.py
@@ -553,8 +553,8 @@ class TodoParser(object):
     def _get_language_details(self, language_name, attribute, value):
         """Try and get the Markdown language and comment syntax
         data based on a specified attribute of the language."""
-        extensions = [ex.lower() for ex in self.languages_dict[language_name][attribute]]
-        if value.lower() in extensions:
+        attributes = [at.lower() for at in self.languages_dict[language_name][attribute]]
+        if value.lower() in attributes:
             for syntax_details in self.syntax_dict:
                 if syntax_details['language'] == language_name:
                     return syntax_details['markers'], self.languages_dict[language_name]['ace_mode']