diff --git a/docker/RO/Dockerfile b/docker/RO/Dockerfile
index 89ed385..09281be 100644
--- a/docker/RO/Dockerfile
+++ b/docker/RO/Dockerfile
@@ -99,5 +99,5 @@
   CMD curl --silent --fail http://localhost:9090/ro || exit 1
   # CMD curl --silent --fail localhost:9090/openmano/tenants || exit 1
 # CMD /usr/bin/RO-start.sh
-CMD python3 -m osm_ng_ro.ro_main
+CMD ["python3", "-u", "-m", "osm_ng_ro.ro_main"]