diff --git a/README.md b/README.md
index d6bb9a9..f98d1d4 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # MongoDbGenericRepository
+
 An example of generic repository implementation using the MongoDB C# Sharp 2.0 driver (async)
 
 Now available as a nuget package:
@@ -8,6 +9,12 @@ Covered by 400+ integration tests and counting.
 
 The MongoDbGenericRepository is also used in [AspNetCore.Identity.MongoDbCore](https://github.com/alexandre-spieser/AspNetCore.Identity.MongoDbCore).
 
+This package sets the MongoDefaults.GuidRepresentation to `MongoDB.Bson.GuidRepresentation.Standard` by default, instead of the default driver setting of `MongoDB.Bson.GuidRepresentation.CSharpLegacy`.
+
+You can override this behaviour to enforce legacy behaviour in your app Startup routing like so :
+
+`MongoDbContext.SetGuidRepresentation(MongoDB.Bson.GuidRepresentation.CSharpLegacy)`. More info [here](https://github.com/alexandre-spieser/mongodb-generic-repository/issues/7).
+
 # Usage examples
 
 This repository is meant to be inherited from.