diff --git a/Jenkinsfile b/Jenkinsfile
index 6ebf157..1316877 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -9,7 +9,7 @@ pipeline {
         }
     stage('build') {
             steps {
-                sh 'ant --version'
+                sh 'ant -version'
                 sh 'java -version'
                 sh 'mkdir ~/test_jenkins_mkdir'
         }