diff --git a/README.md b/README.md
index daa96a3..d441374 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@ Federated Lightning Address Server (with (partly) NIP57 Zap support)
 1. Download the binary from the releases page (or compile with `go build` or `go get`)
 2. Set the following environment variables somehow (using example values from bitmia.com):
 
+> The `nsec` in this file should be a new one. It is needed to sign messages only, so does not need to be your main account key.
+
 ```
 PORT=17422
 DOMAIN=bitmia.com
@@ -47,4 +49,4 @@ Code needs some refactoring
 Needs proper testing (Multi-User and other backends)
 
 Inspired by LightningTipBot code from @calle
-https://github.com/LightningTipBot/LightningTipBot
\ No newline at end of file
+https://github.com/LightningTipBot/LightningTipBot