diff --git a/_security/authentication-backends/saml.md b/_security/authentication-backends/saml.md
index b19b1376..4888e1d4 100755
--- a/_security/authentication-backends/saml.md
+++ b/_security/authentication-backends/saml.md
@@ -224,7 +224,8 @@ SAML, unlike other protocols, is not meant to be used for exchanging user creden
 
 Name | Description
 :--- | :---
-`exchange_key` | The key to sign the token. The algorithm is HMAC-SHA512, so it should have at least 64 characters, and base64 URL encoding.
+`exchange_key` | The key to sign the token. The algorithm is HMACSHA512, therefore we recommend to use 64 characters, for example `9a2h8ajasdfhsdiydfn7dtd6d5ashsd89a2h8ajasdHhsdiyLfn7dtd6d5ashsdI`. Ensure that you enter a value for `exchange_key`, otherwise an error is returned. 
+
 
 
 ## TLS settings