diff --git a/Reference-Manual.mediawiki b/Reference-Manual.mediawiki
index 3b8cdc8..31fefa7 100644
--- a/Reference-Manual.mediawiki
+++ b/Reference-Manual.mediawiki
@@ -3433,7 +3433,7 @@ SecRule REQUEST_COOKIES:PHPSESSID !^$ "nolog,pass,id:138,setsid:%{REQUEST_COOKIE
 </pre>
 Note
 
-After the initialization takes place, the variable SESSIONID will be available for use in the subsequent rules. This action understands application namespaces (configured using SecWebAppId), and will use one if it is configured.
+After the initialization takes place, the variable SESSION will be available for use in the subsequent rules. This action understands application namespaces (configured using SecWebAppId), and will use one if it is configured.
 
 Setsid takes an individual variable, not a collection. Variables within an action, such as setsid, use the format [collection].[variable] .