diff --git a/Jenkinsfile b/Jenkinsfile
index 78c0bea2c..b9584f55c 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,7 +1,7 @@
 pipeline {
   agent {
     kubernetes {
-      label 'xtext-core-' + env.BRANCH_NAME + '-' + env.BUILD_NUMBER
+      label 'xtext-core-' + (env.BRANCH_NAME.replace('/','_')) + '-' + env.BUILD_NUMBER
       defaultContainer 'xtext-buildenv'
       yaml '''
 apiVersion: v1