diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/UuidItem.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/UuidItem.php
index b7daa16..f5ed4dc 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/UuidItem.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/UuidItem.php
@@ -44,7 +44,9 @@ public function applyDefaultValue($notify = TRUE) {
    */
   public static function schema(FieldStorageDefinitionInterface $field_definition) {
     $schema = parent::schema($field_definition);
-    $schema['unique keys']['value'] = array('value');
+    if (!$field_definition->isRevisionable()) {
+      $schema['unique keys']['value'] = array('value');
+    }
     $schema['columns']['value']['initial_from_field'] = 'UUID()';
     return $schema;
   }