diff --git a/src/Filter/Filter.php b/src/Filter/Filter.php
index 2cf4ef286..f4558371b 100644
--- a/src/Filter/Filter.php
+++ b/src/Filter/Filter.php
@@ -13,6 +13,7 @@
 
 namespace Sonata\DoctrineORMAdminBundle\Filter;
 
+use Doctrine\ORM\Query\Expr\Comparison;
 use Doctrine\ORM\Query\Expr\Orx;
 use Sonata\AdminBundle\Datagrid\ProxyQueryInterface as BaseProxyQueryInterface;
 use Sonata\AdminBundle\Filter\Filter as BaseFilter;
@@ -189,8 +190,8 @@ private function addOrParameter(BaseProxyQueryInterface $query, $parameter): voi
 
                 $expressionParts = $expression->getParts();
 
-                if (isset($expressionParts[0]) && \is_string($expressionParts[0]) &&
-                    0 === strpos($expressionParts[0], ':sonata_admin_datagrid_filter_query_marker')
+                if (isset($expressionParts[0]) && $expressionParts[0] instanceof Comparison &&
+                    0 === strpos($expressionParts[0]->getLeftExpr(), "'sonata_admin_datagrid_filter_query_marker_a'")
                 ) {
                     $expression->add($parameter);
 
@@ -204,8 +205,7 @@ private function addOrParameter(BaseProxyQueryInterface $query, $parameter): voi
 
         if (null === $groupName) {
             // Add the ":sonata_admin_datagrid_filter_query_marker" parameter as marker for the `Orx` expression.
-            $orExpression->add($qb->expr()->isNull(':sonata_admin_datagrid_filter_query_marker'));
-            $qb->setParameter('sonata_admin_datagrid_filter_query_marker', 'sonata_admin.datagrid.filter_query.marker');
+            $orExpression->add($qb->expr()->neq("'sonata_admin_datagrid_filter_query_marker_a'", "'sonata_admin_datagrid_filter_query_marker_b'"));
         } else {
             self::$groupedOrExpressions[$groupName] = $orExpression;
         }
diff --git a/tests/Filter/FilterTest.php b/tests/Filter/FilterTest.php
index 9b3938411..38a374dac 100644
--- a/tests/Filter/FilterTest.php
+++ b/tests/Filter/FilterTest.php
@@ -169,7 +169,7 @@ public function orExpressionProvider(): iterable
 
         yield 'Missing "or_group" option, fallback to DQL marker' => [
             'SELECT e FROM MyEntity e WHERE 1 = 2 AND (:parameter_1 = 4 OR 5 = 6)'
-            .' AND (:sonata_admin_datagrid_filter_query_marker IS NULL'
+            .' AND (\'sonata_admin_datagrid_filter_query_marker_a\' <> \'sonata_admin_datagrid_filter_query_marker_b\''
             .' OR e.project LIKE :project_0 OR e.version LIKE :version_1) AND 7 = 8',
             [
                 [