diff --git a/plugins/bundler/README.md b/plugins/bundler/README.md
index 56f0c7176..08e1f027f 100644
--- a/plugins/bundler/README.md
+++ b/plugins/bundler/README.md
@@ -47,3 +47,5 @@ These gems should not be called with `bundle exec`. Please see the Issues on Git
 `rails`
 `ruby`
 `spin`
+
+For curiours: Why you shouldn't prepend `rails` with `bundle exec` https://github.com/bundler/bundler/commit/2c838255ccadadeab5298b7c2bbc39035e59f248