diff --git a/questionservice/server.js b/questionservice/server.js
index 90fcfc3..ac6433b 100644
--- a/questionservice/server.js
+++ b/questionservice/server.js
@@ -8,10 +8,6 @@ const promBundle = require('express-prom-bundle');
 
 const crypto = require('crypto');
 
-//Prometheus configuration
-const metricsMiddleware = promBundle({includeMethod: true});
-app.use(metricsMiddleware);
-
 let corsOptions = {
     origin: 'http://localhost:8000'
 };
@@ -21,6 +17,10 @@ let app = express();
 app.disable("x-powered-by") //disable default information of express
 app.use(cors(corsOptions));
 
+//Prometheus configuration
+const metricsMiddleware = promBundle({includeMethod: true});
+app.use(metricsMiddleware);
+
 // Cargamos las consultas SPARQL desde el fichero de configuración
 const questions = JSON.parse(fs.readFileSync('questions.json', 'utf8'));