diff --git a/autoload/gitgutter/hunk.vim b/autoload/gitgutter/hunk.vim
index a54b01c..8bf0100 100644
--- a/autoload/gitgutter/hunk.vim
+++ b/autoload/gitgutter/hunk.vim
@@ -328,6 +328,9 @@ function! s:undo(hunk_diff)
     call append(lnum-1, lines[0:hunk[1]])
     execute (lnum+hunk[1]) .','. (lnum+hunk[1]+hunk[3]) .'d _'
   endif
+
+  " Refresh gitgutter's view of buffer.
+  call gitgutter#process_buffer(bufnr(''), 1)
 endfunction