diff --git a/Jenkinsfile b/Jenkinsfile
index 53761c3..1c9d801 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -62,7 +62,8 @@ pipeline {
 
             script {
 
-                if (env.BRANCH_NAME.startsWith('pr-')) {
+                sh "'${env.BRANCH_NAME}'"
+                if (${env.BRANCH_NAME}.startsWith('pr-')) {
 
 //                git url: "git@gogs.informatik.hs-fulda.de:SteffenN/Multi-Chess.git",
 //                        credentialsId: 'jenkins_ssh_key',