diff --git a/Jenkinsfile b/Jenkinsfile
index 73a687dfc..4fa8c17eb 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -21,7 +21,7 @@ pipeline {
 
     stage('Deploy') {
       steps {
-        sh 'when { branch master}'
+        sh 'when { branch \'master\'}'
       }
     }