diff --git a/Jenkinsfile b/Jenkinsfile
index 4ba0a8f87..4cc6d74f4 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -43,13 +43,13 @@ node
         
         stage ("Stopping/Removing Docker")
         {
-            env.TAG = "${env.BUILD_NUMBER}-1";
+            env.TAG = "${env.BUILD_NUMBER}" - 1;
             sh "docker-compose down --rmi 'all'" 
         }
 
         stage ("Generar dockers")
         {
-            env.TAG = "${env.BUILD_NUMBER}+1";
+            env.TAG = "${env.BUILD_NUMBER}" + 1;
             sh "docker-compose up -d --build"
         }  
     }