diff --git a/aggregates/README.md b/aggregates/README.md
index bd13c87..51c032b 100644
--- a/aggregates/README.md
+++ b/aggregates/README.md
@@ -1,3 +1,4 @@
 # cqrs4j-example-aggregates
 DDD related code for all demo applications (aggregates, entities and business exceptions).
 
+> :warning: Normally you should **not** share code this way between your command microservices. A *shared-nothing* approach is a good practice for microservices (See for example [Don't Share Libraries among Microservices](https://phauer.com/2016/dont-share-libraries-among-microservices/)). You can simply copy the content of this module directly into your command project.