diff --git a/Tmain/client-vista-vim-fields-expectation.d/run.sh b/Tmain/client-vista-vim-fields-expectation.d/run.sh
index 6bbff2a8f7..5d9f4e6acb 100644
--- a/Tmain/client-vista-vim-fields-expectation.d/run.sh
+++ b/Tmain/client-vista-vim-fields-expectation.d/run.sh
@@ -1,11 +1,12 @@
 # Copyright: 2021 <liuchengxu@github.com>
 # License: GPL-2
-#!/usr/bin/env bash
 
 CTAGS=$1
 
 . ../utils.sh
 
-$CTAGS --format=2 --excmd=pattern --fields=+nksSaf --extras=+F --sort=no --append=no --extras=  --language-force=vim --vim-kinds=acfvmn --output-format=json --fields=-PF -f- $(pwd)/test.vim
+is_feature_available "${CTAGS}" json
+
+$CTAGS --format=2 --excmd=pattern --fields=+nksSaf --extras=+F --sort=no --append=no --extras=  --language-force=vim --vim-kinds=acfvmn --output-format=json --fields=-PF -f- test.vim
 
 exit $?