diff --git a/core/lib/Drupal/Core/Config/ConfigImporter.php b/core/lib/Drupal/Core/Config/ConfigImporter.php
index 5a896c8261..6566d4f7b4 100644
--- a/core/lib/Drupal/Core/Config/ConfigImporter.php
+++ b/core/lib/Drupal/Core/Config/ConfigImporter.php
@@ -664,7 +664,7 @@ protected function processPostImportHooks(&$context) {
       return;
     }
 
-    if (isset($sandbox['post_config_import']['total'])) {
+    if (!isset($sandbox['post_config_import']['total'])) {
       $sandbox['post_config_import']['total'] = count($pending);
     }
     $context['finished'] = ($sandbox['post_config_import']['total'] - count($pending)) / $sandbox['post_config_import']['total'];