diff --git a/web/ui/build_ui.sh b/web/ui/build_ui.sh
index 62568aaa30..7046ca0596 100644
--- a/web/ui/build_ui.sh
+++ b/web/ui/build_ui.sh
@@ -31,9 +31,7 @@ function buildModule() {
 
 function buildReactApp() {
   echo "build react-app"
-  cd react-app
-  npm run build
-  cd ..
+  (cd react-app && npm run build)
   rm -rf ./static/react-app
   mv ./react-app/build ./static/react-app
 }