diff --git a/application/third_party/tripadvisor_spider/controllers/index.php b/application/third_party/tripadvisor_spider/controllers/index.php
index 82d496e2..e6842a59 100644
--- a/application/third_party/tripadvisor_spider/controllers/index.php
+++ b/application/third_party/tripadvisor_spider/controllers/index.php
@@ -436,7 +436,7 @@ class Index extends CI_Controller {
 		}else{
 			$product_code = $this->input->get_post('productCode');
 			$num = $this->input->get_post("num");
-			if (!isset($num)){
+			if (!$num || !is_int($num)){
 				$num=5;
 			}