diff --git a/readme.md b/readme.md
index 143dc55..9d3c4ec 100644
--- a/readme.md
+++ b/readme.md
@@ -8,7 +8,11 @@
    openssl genrsa > local.private.key
    openssl rsa -in local.private.key -pubout > local.public.key
    ```
-
+**For macOS (maybe windows) users run 1 more command:**
+   ```bash
+   openssl pkcs8 -topk8 -inform PEM -outform PEM -in local.private.key -out local.private.pkcs8.key -nocrypt
+   ```
+then change `secret-key-file` in application.yml to ```secret-key-file: classpath:local/secrets/local.private.pkcs8.key```
 ## User Controller API
 
 ### Create User