diff --git a/webapp/classes/AddReward.php b/webapp/classes/AddReward.php
index 853344c..1f03615 100644
--- a/webapp/classes/AddReward.php
+++ b/webapp/classes/AddReward.php
@@ -121,7 +121,7 @@ class AddReward
                 }
 
                 if ($price == 0) {
-                    $strs = explode($i['piece'], ':');
+                    $strs = explode(":",$i['piece']);
                     if (count($strs) > 1) {
                         $priceid = intval($strs[0]);
                         $price = intval($strs[1]);