diff --git a/lemonldap-ng-manager/lib/Lemonldap/NG/Manager/Conf/Parser.pm b/lemonldap-ng-manager/lib/Lemonldap/NG/Manager/Conf/Parser.pm
index aadcc7c9b..edf840f2f 100644
--- a/lemonldap-ng-manager/lib/Lemonldap/NG/Manager/Conf/Parser.pm
+++ b/lemonldap-ng-manager/lib/Lemonldap/NG/Manager/Conf/Parser.pm
@@ -993,6 +993,7 @@ sub _execTest {
     # Recursive test (for locationRules,...)
     else {
         my $res = 1;
+        return $res unless ( ref($value) eq 'HASH' );
         foreach my $k ( keys %$value ) {
             $res = 0
               unless (