diff --git a/uc_attribute/uc_attribute.install b/uc_attribute/uc_attribute.install
index 5a5b0b8..8b1eed9 100644
--- a/uc_attribute/uc_attribute.install
+++ b/uc_attribute/uc_attribute.install
@@ -375,6 +375,7 @@ function uc_attribute_schema() {
         'length' => 255,
         'not null' => TRUE,
         'default' => '',
+        'serialize' => TRUE,
       ),
       'model' => array(
         'description' => 'The SKU representing the product with the combination of options.',