diff --git a/src/nbi/service/app.py b/src/nbi/service/app.py
index f45b87b2c3baeddc149134c011f9e854d44bbfa3..db696efd618206679990c33f246e4c92d47be2f4 100644
--- a/src/nbi/service/app.py
+++ b/src/nbi/service/app.py
@@ -90,20 +90,20 @@ def configure_nbi(
     #metrics_port = get_metrics_port()
     #start_http_server(metrics_port)
 
-    nbi_app = NbiApplication(base_url=base_url)
+    _nbi_app = NbiApplication(base_url=base_url)
 
     for register_method in REGISTER_METHODS:
-        register_method(nbi_app)
+        register_method(_nbi_app)
 
-    nbi_app.dump_configuration()
+    _nbi_app.dump_configuration()
 
-    return nbi_app
+    return _nbi_app
 
-_nbi_app = configure_nbi(base_url=BASE_URL)
+nbi_app = configure_nbi(base_url=BASE_URL)
 
 if __name__ == '__main__':
     # Only used to run it locally during development stage;
     # otherwise, app is directly launched by gunicorn.
-    _nbi_app.run_standalone(
+    nbi_app.run_standalone(
         bind_address=BIND_ADDRESS, bind_port=BIND_PORT
     )