diff --git a/rplugin/python3/deoplete/langserver.py b/rplugin/python3/deoplete/langserver.py
index 118b88c..5a282b4 100644
--- a/rplugin/python3/deoplete/langserver.py
+++ b/rplugin/python3/deoplete/langserver.py
@@ -6,7 +6,7 @@ def __init__(self, nvim):
         super(Source, self).__init__(nvim)
 
         self.nvim = nvim
-        self.name = langserver
+        self.name = 'langserver'
         self.mark = '[LSP]'
 
     def on_event(self, context, filename=''):
@@ -15,7 +15,7 @@ def on_event(self, context, filename=''):
     def gather_candidates(self, context):
         user_input = context['input']
         filetype = context.get('filetype', '')
-        complete_str  context['complete_str']
+        complete_str = context['complete_str']
 
         return [
             {