diff --git a/Jenkinsfile b/Jenkinsfile
index 19c0ce6..3416175 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -9,7 +9,7 @@ pipeline {
     stages {
         stage('Init variables') {
             when {
-                expression(env.CHANGE_BRANCH?.startsWith('rc'))
+                expression{env.CHANGE_BRANCH?.startsWith('rc')}
             }
             steps {
                 script {