diff --git a/Jenkinsfile b/Jenkinsfile
index e30c52ab..c299ba52 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -67,7 +67,9 @@ pipeline {
         stage('🧭 Init - Détection environnement') {
             steps {
                 script {
-                    def currentBranch = sh(script: "git rev-parse --abbrev-ref HEAD", returnStdout: true).trim()
+                    // Utiliser BRANCH_NAME (Multibranch Pipeline) ou GIT_BRANCH (fallback)
+                    // git rev-parse --abbrev-ref HEAD retourne "HEAD" en detached HEAD mode
+                    def currentBranch = env.BRANCH_NAME ?: env.GIT_BRANCH?.replaceAll('origin/', '') ?: sh(script: "git rev-parse --abbrev-ref HEAD", returnStdout: true).trim()
                     echo "🧭 Branche détectée : ${currentBranch}"
 
                     if (["dev", "preprod", "main"].contains(currentBranch)) {