diff --git a/Jenkinsfile b/Jenkinsfile
index 4be7865..ea65091 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -4,18 +4,24 @@ pipeline {
     stages {
         stage('Clone repository') {
             steps {
-                checkout([$class: 'GitSCM', branches: [[name: '*/master']], userRemoteConfigs: [[url: 'https://git.wmi.amu.edu.pl/s464906/ium_464906.git']]])
+                checkout([$class: 'GitSCM', branches: [[name: '*/master']], userRemoteConfigs: [[url: 'https://git.wmi.amu.edu.pl/s464906/ium_464906']]])
+            }
+        }
+        stage('Set execute permission') {
+            steps {
+                script {
+                    sh 'chmod +x data_processing.sh'
+                }
             }
         }
         stage('Run shell script') {
             steps {
                 script {
-                    chmod +x data_processing.sh
                     sh './data_processing.sh'
                 }
             }
             post {
-                always {
+                success {
                     archiveArtifacts artifacts: 'results.txt', allowEmptyArchive: true
                 }
             }