diff --git a/activestorage/db/migrate/20170806125915_create_active_storage_tables.rb b/activestorage/db/migrate/20170806125915_create_active_storage_tables.rb
index abebb74f73..cd459993bf 100644
--- a/activestorage/db/migrate/20170806125915_create_active_storage_tables.rb
+++ b/activestorage/db/migrate/20170806125915_create_active_storage_tables.rb
@@ -32,7 +32,7 @@ def change
         t.datetime :created_at, null: false
       end
 
-      t.index [ :record_type, :record_id, :name, :blob_id ], name: "index_active_storage_attachments_uniqueness", unique: true
+      t.index [ :record_type, :record_id, :name, :blob_id ], name: :index_active_storage_attachments_uniqueness, unique: true
       t.foreign_key :active_storage_blobs, column: :blob_id
     end
 
@@ -40,7 +40,7 @@ def change
       t.belongs_to :blob, null: false, index: false, type: foreign_key_type
       t.string :variation_digest, null: false
 
-      t.index %i[ blob_id variation_digest ], name: "index_active_storage_variant_records_uniqueness", unique: true
+      t.index [ :blob_id, :variation_digest ], name: :index_active_storage_variant_records_uniqueness, unique: true
       t.foreign_key :active_storage_blobs, column: :blob_id
     end
   end