diff --git a/rplugin/python3/deoplete/sources/vimshell.py b/rplugin/python3/deoplete/sources/vimshell.py
index 273be1ae..9642e4e7 100644
--- a/rplugin/python3/deoplete/sources/vimshell.py
+++ b/rplugin/python3/deoplete/sources/vimshell.py
@@ -32,6 +32,7 @@ def __init__(self):
 
         self.name = 'vimshell'
         self.mark = '[vimshell]'
+        self.filetypes = ['vimshell']
 
     def get_complete_position(self, vim, context):
         return vim.eval('vimshell#complete#get_keyword_position()')