diff --git a/README.md b/README.md
index dd49149..e3af417 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ require 'aws-sdk-polly'
 polly = Aws::Polly::Client.new(region: 'us-west-2')
 
 # Add the lexicons
-MedievalLatina::Lexicon.files_with_contents.each do |name, context|
+MedievalLatina::Lexicon.file_names_with_contents.each do |name, content|
   polly.put_lexicon(name: name, content: content)
 end
 
diff --git a/lib/medieval_latina/lexicon.rb b/lib/medieval_latina/lexicon.rb
index 068ac8a..6f14149 100644
--- a/lib/medieval_latina/lexicon.rb
+++ b/lib/medieval_latina/lexicon.rb
@@ -17,9 +17,9 @@ def self.get_file_content(file_name)
       File.read(path)
     end
 
-    def self.files_with_contents
+    def self.file_names_with_contents
       list_files.each_with_object({}) do |file_path, files_content|
-        file_name = File.basename(file_path)
+        file_name, _extension = File.basename(file_path).split(".")
         files_content[file_name] = get_file_content(file_name)
       end
     end