diff --git a/Jenkinsfile b/Jenkinsfile
index a5d28f3685b95c995c498397d11a0a2a7120ce37..3917dc002650a18a09919f9bf32c830dcb2ac0d1 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -273,12 +273,12 @@ pipeline {
                             sh 'docker login docker.ozg-sh.de -u ${USER} -p ${PASSWORD}'
                             
                             if (env.BRANCH_NAME == 'release') {
-                                sh 'docker tag docker.ozg-sh.de/goofy:${IMAGE_TAG} docker.ozg-sh.de/goofy:latest'
+                                sh "docker tag docker.ozg-sh.de/goofy:${IMAGE_TAG} docker.ozg-sh.de/goofy:latest"
                                 sh 'docker push docker.ozg-sh.de/goofy:latest'
                             }
 
                             if (env.BRANCH_NAME == 'master') {
-                                sh 'docker tag docker.ozg-sh.de/goofy:${IMAGE_TAG} docker.ozg-sh.de/goofy:snapshot-latest'
+                                sh "docker tag docker.ozg-sh.de/goofy:${IMAGE_TAG} docker.ozg-sh.de/goofy:snapshot-latest"
                                 sh 'docker push docker.ozg-sh.de/goofy:snapshot-latest'
                             }
                         }