diff --git a/autoload/gitgutter/hunk.vim b/autoload/gitgutter/hunk.vim
index ee71c49..a7deb64 100644
--- a/autoload/gitgutter/hunk.vim
+++ b/autoload/gitgutter/hunk.vim
@@ -274,7 +274,7 @@ function! s:preview(hunk_diff)
 
   setlocal noreadonly modifiable filetype=diff buftype=nofile bufhidden=delete noswapfile
   execute "%delete_"
-  call append(0, hunk_lines)
+  call setline(1, hunk_lines)
   normal! gg
   setlocal readonly nomodifiable