diff --git a/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php b/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php
index f75afab3cf..7087394c1d 100644
--- a/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php
+++ b/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php
@@ -2249,10 +2249,9 @@ protected function getDedicatedTableSchema(FieldStorageDefinitionInterface $stor
     }
     else {
       $id_settings = $id_definition->getSettings();
-      $max_length = array_key_exists('max_length', $id_settings) ? $id_settings['max_length'] : 128;
-      $is_ascii = array_key_exists('is_ascii', $id_settings) ? $id_settings['is_ascii'] : TRUE;
+      $max_length = array_key_exists('max_length', $id_settings) ? $id_settings['max_length'] : 255;
       $id_schema = [
-        'type' => $is_ascii ? 'varchar_ascii' : 'varchar',
+        'type' => 'varchar',
         'length' => $max_length,
         'not null' => TRUE,
         'description' => 'The entity id this data is attached to',
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php
index 0bf634ea5e..9e65e19c79 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php
@@ -133,17 +133,32 @@ public static function schema(FieldStorageDefinitionInterface $field_definition)
       ];
     }
     else {
+      $id_key = $target_type_info->getKey('id');
+      $entity_field_manager = \Drupal::service('entity_field.manager');
+      $base_fields = $entity_field_manager->getBaseFieldDefinitions($target_type);
+      $id_field_definition = $base_fields[$id_key];
+      $id_settings = $id_field_definition->getItemDefinition()->getSettings();
+      if ($target_type_info->getBundleOf()) {
+        // If the target entities act as bundles for another entity type,
+        // their IDs should not exceed the maximum length for bundles.
+        $column_max_length = EntityTypeInterface::BUNDLE_MAX_LENGTH;
+      }
+      elseif (array_key_exists('max_length', $id_settings)) {
+        $column_max_length = $id_settings['max_length'];
+      }
+      else {
+        $column_max_length = 255;
+      }
       $columns = [
         'target_id' => [
           'description' => 'The ID of the target entity.',
-          'type' => 'varchar_ascii',
-          // If the target entities act as bundles for another entity type,
-          // their IDs should not exceed the maximum length for bundles.
-          'length' => $target_type_info->getBundleOf() ? EntityTypeInterface::BUNDLE_MAX_LENGTH : 255,
+          'type' => 'varchar',
+          'length' => $column_max_length,
         ],
       ];
     }
 
+
     $schema = [
       'columns' => $columns,
       'indexes' => [