diff --git a/Jenkinsfile b/Jenkinsfile
index a52de23..3d47187 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -3,8 +3,7 @@ pipeline {
     stages {
         stage('checkout: Check out from version control') {
             steps {
-                git branch: 'master',
-                url: 'https://git.wmi.amu.edu.pl/s426274/s426274-mlworkshops.git'
+              checkout([$class: 'GitSCM', branches: [[name: '*/master']], doGenerateSubmoduleConfigurations: false, extensions: [], submoduleCfg: [], userRemoteConfigs: [[url: 'https://git.wmi.amu.edu.pl/s426274/s426274-mlworkshops']]])
             }
         }
         stage('Copy Archive') {
diff --git a/numberOfLines.txt b/numberOfLines.txt
deleted file mode 100644
index e69de29..0000000