diff --git a/Jenkinsfile b/Jenkinsfile
index 103d9d3..6660d29 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -11,7 +11,7 @@ pipeline {
 		IMAGE                      = "nginx-proxy-manager"
 		BUILD_VERSION              = getVersion()
 		MAJOR_VERSION              = "2"
-		BRANCH_LOWER               = "${BRANCH_NAME.toLowerCase().replaceAll('/', '-')}"
+		BRANCH_LOWER               = "proxyprotocol"
 		COMPOSE_PROJECT_NAME       = "npm_${BRANCH_LOWER}_${BUILD_NUMBER}"
 		COMPOSE_FILE               = 'docker/docker-compose.ci.yml'
 		COMPOSE_INTERACTIVE_NO_CLI = 1