diff --git a/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php b/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php
index 61821b0..dce5151 100644
--- a/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php
+++ b/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php
@@ -791,7 +791,7 @@ protected function buildQuery($ids, $revision_id = FALSE) {
 
       // Compare revision ID of the base and revision table, if equal then this
       // is the default revision.
-      $query->addExpression('base.' . $this->revisionKey . ' = revision.' . $this->revisionKey, 'isDefaultRevision');
+      $query->addExpression('CASE base.' . $this->revisionKey . ' WHEN revision.' . $this->revisionKey . ' THEN 1 ELSE 0 END', 'isDefaultRevision');
     }
 
     $query->fields('base', $entity_fields);