diff --git uc_attribute/uc_attribute.ca.inc uc_attribute/uc_attribute.ca.inc
index 22646b8..ab147ac 100644
--- uc_attribute/uc_attribute.ca.inc
+++ uc_attribute/uc_attribute.ca.inc
@@ -45,8 +45,19 @@ function uc_attribute_condition_ordered_product_option($order, $settings) {
     // Once the order is made, the attribute data is changed to just the names.
     // If we can't find it by ID, check the names.
     if (is_int(key($attributes))) {
-      if (in_array($settings['attribute_option'], $attributes)) {
-        $result = TRUE;
+      foreach ($attributes as $attribute => $option) {
+        // Sometimes more than one option can be available (checkboxes).
+        if (is_array($option) && in_array($settings['attribute_option'], $option)) {
+          $result = TRUE;
+          break;
+        }
+        // Other times, only one option and we can directly compare.
+        else if ($option == $setting['attribute_options']) {
+          $result = TRUE;
+          break;
+        }
+      }
+      if ($result) {
         break;
       }
     }