diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index 72e1274..7f1e71d 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -2205,6 +2205,10 @@
     result ..= cnt .. '_'
   endwhile
   assert_equal('1_3_', result)
+
+  var s = ''
+  while s == 'x' #{comment
+  endwhile
 enddef
 
 def Test_while_loop_fails()