diff --git a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Plugins/GrantSession.pm b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Plugins/GrantSession.pm
index c448ee4aa..6fd32df33 100644
--- a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Plugins/GrantSession.pm
+++ b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Plugins/GrantSession.pm
@@ -28,8 +28,9 @@ sub init {
             $hd->substitute( $self->conf->{grantSessionRules}->{$_} ) );
         unless ($rule) {
             my $error = $hd->tsv->{jail}->error || '???';
-            $self->error("Bad grantSession rule -> $error");
-            return 0;
+            $self->logger->error("Bad grantSession rule -> $error");
+            $self->logger->debug("Skipping GrantSession rule \"$_\"");
+            next;
         }
         $self->rules->{$_} = $rule;
     }
diff --git a/lemonldap-ng-portal/t/61-GrantSession.t b/lemonldap-ng-portal/t/61-GrantSession.t
index 657737183..43f49f849 100644
--- a/lemonldap-ng-portal/t/61-GrantSession.t
+++ b/lemonldap-ng-portal/t/61-GrantSession.t
@@ -20,6 +20,7 @@ my $client = LLNG::Manager::Test->new( {
                 'Rtyler_Allowed##rule3'        => '$uid eq "rtyler"',
                 '##rule2'                      => '$uid ne "msmith"',
                 '##rule4'                      => '$uid ne "jdoe"',
+                '##bad_rule'                   => '$uid n "jdoe"',
             }
         }
     }