diff --git a/Jenkinsfile b/Jenkinsfile
index 107461f..31fd4f8 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -81,10 +81,10 @@ pipeline {
                 }
                 sh '''
                     echo "cleanup $DEPLOY_FILE";
-                    if [ -f ${DEPLOY_BACKUP} ]; then
-                        echo "backup found: ${DEPLOY_BACKUP} going to replace it";
-                        rm ${DEPLOY_BACKUP};
-                        mv ${DEPLOY_FILE} ${DEPLOY_BACKUP};
+                    if [ -f ${BACKUP_FILE} ]; then
+                        echo "backup found: ${BACKUP_FILE} going to replace it";
+                        rm ${BACKUP_FILE};
+                        mv ${DEPLOY_FILE} ${BACKUP_FILE};
                         touch ${DEPLOY_FILE};
                     fi    
                 '''