diff --git a/Jenkinsfile b/Jenkinsfile
index 1365ebb..555e71a 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -32,8 +32,6 @@ pipeline{
         sshCommand remote: remote, command: '''
             set -e
             export WORKSPACE=$(realpath "./jenkins/workspace/antos")
-            [ -d build ] && rm -rf build
-            mkdir -p build/opt/www/htdocs/os
             cd $WORKSPACE
             npm install terser
             npm install uglifycss
@@ -48,6 +46,7 @@ pipeline{
             set -e
             export WORKSPACE=$(realpath "./jenkins/workspace/antos")
             cd $WORKSPACE
+             [ -d build ] && rm -rf build
             export BUILDDIR="$WORKSPACE/build/opt/www/htdocs/os"
             make release
           '''