diff --git a/modules/saml/docs/sp.txt b/modules/saml/docs/sp.txt
index ce3410639b60c443474c2bf17a18ae75a2c5668c..be2d7de7b26590f79554882083f3b970beafa675 100644
--- a/modules/saml/docs/sp.txt
+++ b/modules/saml/docs/sp.txt
@@ -319,6 +319,7 @@ Options
 :   The page the user should be redirected to after an IdP initiated SSO.
 
 :   *Note*: SAML 2 specific.
+    For SAML 1.1 SPs, you must specify the `TARGET` in the authentication response.
 
 `url`
 :   An URL to your service provider. Will be added as an OrganizationURL-element in the metadata.