diff --git a/test/embedding/README.md b/test/embedding/README.md
index 61dadbf..6d05afa 100644
--- a/test/embedding/README.md
+++ b/test/embedding/README.md
@@ -25,3 +25,5 @@ PG_USER="username"
 PG_PASSWORD="passwd"
 PG_DATABASE="PeeGeeVee"
 ```
+
+Make sure those are set in the subshell, for example by using an env.sh file and `set -o allexport && source env.sh && set +o allexport`! Further reading: (https://huggingface.co/blog/ucheog/separate-env-setup-from-code)