diff --git a/Jenkinsfile b/Jenkinsfile
index 36260dd..47801a0 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -14,7 +14,7 @@ pipeline {
     agent any
     environment {
         URL_BUILD = 'https://download.geysermc.org/v2/projects/geyser/versions/latest/builds/latest'
-        URL_DOWNLOAD = URL_BUILD + '/downloads/standalone'
+        URL_DOWNLOAD = "${URL_BUILD}/downloads/standalone"
         DOCKER_TAG_BASE = 'cr.pandacube.fr/geyser'
         DOCKER_CR_PANDACUBE_CREDENTIALS = 'cr-pandacube-credentials'
     }