diff --git a/modules/lemonldap-ng-handler/lib/Lemonldap/NG/Handler/Simple.pm b/modules/lemonldap-ng-handler/lib/Lemonldap/NG/Handler/Simple.pm
index 4dba630cc..9552ffee8 100644
--- a/modules/lemonldap-ng-handler/lib/Lemonldap/NG/Handler/Simple.pm
+++ b/modules/lemonldap-ng-handler/lib/Lemonldap/NG/Handler/Simple.pm
@@ -563,7 +563,7 @@ sub conditionSub {
 
         # logout_app
         if ( $cond =~ /^logout_app(?:\s+(.*))?$/i ) {
-            my $u = $1 || 'portal()';
+            my $u = $1 || $class->portal();
             eval 'use Apache2::Filter' unless ( $INC{"Apache2/Filter.pm"} );
             return (
                 sub {
@@ -579,7 +579,7 @@ sub conditionSub {
         }
         elsif ( $cond =~ /^logout_app_sso(?:\s+(.*))?$/i ) {
             eval 'use Apache2::Filter' unless ( $INC{"Apache2/Filter.pm"} );
-            my $u = $1 || 'portal()';
+            my $u = $1 || $class->portal();
             return (
                 sub {
                 $class->localUnlog;