diff --git a/Jenkinsfile b/Jenkinsfile
index a421e3f..0bf5d1b 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -3,7 +3,7 @@ pipeline {
     stages {
         stage('mail') {
             steps {
-                print ${message}
+                print "${message}"
             }
         }
 	}