diff --git a/rplugin/python3/denite/kind/buffer.py b/rplugin/python3/denite/kind/buffer.py
index fd7529306..619f92b1f 100644
--- a/rplugin/python3/denite/kind/buffer.py
+++ b/rplugin/python3/denite/kind/buffer.py
@@ -38,7 +38,7 @@ def action_preview(self, context):
             return
 
         prev_id = self.vim.call('win_getid')
-        self.vim.command('pedit')
+        self.vim.command('pedit!')
         self.vim.command('wincmd P')
         self.action_open(context)
         self.vim.call('win_gotoid', prev_id)