diff --git a/core/modules/migrate_drupal_ui/src/Form/MigrateUpgradeForm.php b/core/modules/migrate_drupal_ui/src/Form/MigrateUpgradeForm.php
index bec6416..825ba34 100644
--- a/core/modules/migrate_drupal_ui/src/Form/MigrateUpgradeForm.php
+++ b/core/modules/migrate_drupal_ui/src/Form/MigrateUpgradeForm.php
@@ -961,7 +961,7 @@ public function validateCredentialForm(array &$form, FormStateInterface $form_st
       }
 
       // Store the retrieved migration ids in form storage.
-      $form_state->set('migration', $migration_array);
+      $form_state->set('migrations', $migration_array);
 
       // Store the retrived system data in from storage.
       $form_state->set('system_data', $system_data);
@@ -1023,7 +1023,7 @@ public function buildConfirmForm(array $form, FormStateInterface $form_state) {
 
       $table_data = [];
       $system_data = [];
-      foreach ($form_state->get('migration') as $migration_id => $migration_label) {
+      foreach ($form_state->get('migrations') as $migration_id => $migration_label) {
         // Fetch the system data at the first opportunity.
         if (empty($system_data)) {
           $system_data = $form_state->get('system_data');