diff --git a/db/migrate/066_add_custom_value_customized_index.rb b/db/migrate/066_add_custom_value_customized_index.rb
new file mode 100644
index 000000000..1f4c40da2
--- /dev/null
+++ b/db/migrate/066_add_custom_value_customized_index.rb
@@ -0,0 +1,9 @@
+class AddCustomValueCustomizedIndex < ActiveRecord::Migration
+  def self.up
+    add_index :custom_values, [:customized_type, :customized_id], :name => :custom_values_customized
+  end
+
+  def self.down
+    remove_index :custom_values, :name => :custom_values_customized
+  end
+end