diff --git a/lemonldap-ng-handler/lib/Lemonldap/NG/Handler/Simple.pm b/lemonldap-ng-handler/lib/Lemonldap/NG/Handler/Simple.pm
index cc432be68..d676563aa 100644
--- a/lemonldap-ng-handler/lib/Lemonldap/NG/Handler/Simple.pm
+++ b/lemonldap-ng-handler/lib/Lemonldap/NG/Handler/Simple.pm
@@ -907,6 +907,9 @@ sub retrieveSession {
     # Update the session to notify activity, if necessary
     $h{_lastSeen} = time() if ($timeoutActivity);
 
+    # Set _session_id key
+    $h{_session_id} = $id;
+
     # Store data in current shared variables
     $datas->{$_} = $h{$_} foreach ( keys %h );