diff -u b/core/modules/migrate/src/Audit/NodeMasterIdAuditor.php b/core/modules/migrate/src/Audit/NodeMasterIdAuditor.php
--- b/core/modules/migrate/src/Audit/NodeMasterIdAuditor.php
+++ b/core/modules/migrate/src/Audit/NodeMasterIdAuditor.php
@@ -5,7 +5,7 @@
 use Drupal\migrate\Plugin\MigrationInterface;
 
 /**
- * Audits the node master migrations.
+ * Audits the revision ID for the node master migration.
  */
 class NodeMasterIdAuditor {
 
@@ -18,7 +18,7 @@
    * @return \Drupal\migrate\Audit\AuditResult[]
    *   The audit results, keyed by migration ID.
    */
-  public function audit($migrations) {
+  public function auditMultiple(array $migrations) {
     $results = [];
     // If dN_node_master migration is being used, get the audit results for node
     // revisions manually. We need to do this manually because the node master
diff -u b/core/modules/migrate_drupal_ui/src/Form/IdConflictForm.php b/core/modules/migrate_drupal_ui/src/Form/IdConflictForm.php
--- b/core/modules/migrate_drupal_ui/src/Form/IdConflictForm.php
+++ b/core/modules/migrate_drupal_ui/src/Form/IdConflictForm.php
@@ -40,7 +40,7 @@
     $translated_content_conflicts = $content_conflicts = [];
 
     $results = (new IdAuditor())->auditMultiple($migrations);
-    $node_master_results = (new NodeMasterIdAuditor())->audit($migrations);
+    $node_master_results = (new NodeMasterIdAuditor())->auditMultiple($migrations);
     $results += $node_master_results;
 
     /** @var \Drupal\migrate\Audit\AuditResult $result */