diff --git a/src/testdir/test_popup.vim b/src/testdir/test_popup.vim
index a2e86d7..ed31985 100644
--- a/src/testdir/test_popup.vim
+++ b/src/testdir/test_popup.vim
@@ -824,4 +824,14 @@
   bwipe!
 endfunc
 
+func Test_popup_complete_backwards_ctrl_p()
+  new
+  call setline(1, ['Post', 'Port', 'Po'])
+  let expected=['Post', 'Port', 'Port']
+  call cursor(3,2)
+  call feedkeys("A\<C-P>\<C-N>rt\<cr>", 'tx')
+  call assert_equal(expected, getline(1,'$'))
+  bwipe!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab