diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index 05b4e9f..6417d21 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -2159,8 +2159,9 @@
   echomsg [1, 2, 3] #{a: 1, b: 2}
   assert_match('^\[1, 2, 3\] {''a'': 1, ''b'': 2}$', Screenline(&lines))
 
-  call CheckDefFailure(['execute xxx'], 'E1001:')
-  call CheckDefFailure(['execute "cmd"# comment'], 'E488:')
+  call CheckDefFailure(['execute xxx'], 'E1001:', 1)
+  call CheckDefExecFailure(['execute "tabnext " .. 8'], 'E475:', 1)
+  call CheckDefFailure(['execute "cmd"# comment'], 'E488:', 1)
 enddef
 
 def Test_execute_cmd_vimscript()