diff --git a/src/testdir/test_normal.vim b/src/testdir/test_normal.vim
index 4b7e5e6..5cbf681 100644
--- a/src/testdir/test_normal.vim
+++ b/src/testdir/test_normal.vim
@@ -4260,4 +4260,12 @@
   bwipe!
 endfunc
 
+" Test for Ctrl-D with long line
+func Test_halfpage_longline()
+  10new
+  call setline(1, ['long'->repeat(1000), 'short'])
+  exe "norm! \<C-D>"
+  call assert_equal(2, line('.'))
+  bwipe!
+endfunc
 " vim: shiftwidth=2 sts=2 expandtab nofoldenable