diff --git a/webapp/controller/MallController.class.php b/webapp/controller/MallController.class.php
index 2623716c..4c94c00b 100644
--- a/webapp/controller/MallController.class.php
+++ b/webapp/controller/MallController.class.php
@@ -85,7 +85,8 @@ class MallController extends BaseAuthedController {
                                 $arrPriceFilter = explode('|', $priceFilters);
                                 $priceLow = $arrPriceFilter[0];
                                 $priceHigh = $arrPriceFilter[1];
-                                return "AND (price >= ${priceLow} AND price <= ${priceHigh})";
+                                return " AND (length(price) >= length('${priceLow}') AND length(price) <= length('${priceHigh}')) "
+                                    . " AND (price >= '${priceLow}' AND price <= '${priceHigh}') ";
                             }
                         ),
                     )