diff --git a/src/SoftDeleteable/Filter/SoftDeleteableFilter.php b/src/SoftDeleteable/Filter/SoftDeleteableFilter.php
index 9958099006..f37be7d11e 100644
--- a/src/SoftDeleteable/Filter/SoftDeleteableFilter.php
+++ b/src/SoftDeleteable/Filter/SoftDeleteableFilter.php
@@ -71,7 +71,7 @@ public function addFilterConstraint(ClassMetadata $targetEntity, $targetTableAli
 
         $column = $quoteStrategy->getColumnName($config['fieldName'], $targetEntity, $platform);
 
-        $addCondSql = $platform->getIsNullExpression($targetTableAlias.'.'.$column);
+        $addCondSql = $targetTableAlias.'.'.$column . ' IS NULL';
         if (isset($config['timeAware']) && $config['timeAware']) {
             $addCondSql = "({$addCondSql} OR {$targetTableAlias}.{$column} > {$platform->getCurrentTimestampSQL()})";
         }