diff --git a/component/admin/language/en-GB/en-GB.com_redshop.ini b/component/admin/language/en-GB/en-GB.com_redshop.ini
index 895d50c0048..898b5fb3272 100644
--- a/component/admin/language/en-GB/en-GB.com_redshop.ini
+++ b/component/admin/language/en-GB/en-GB.com_redshop.ini
@@ -4529,6 +4529,7 @@ COM_REDSHOP_N_ITEMS_CHECKED_IN = "%d items successfully checked in"
 COM_REDSHOP_PRODUCT_PRICE_SAVE_SUCCESS = "Products price save successfully"
 COM_REDSHOP_PRODUCT_PRICE_SAVE_FAILED = "Failed to save products price"
 COM_REDSHOP_PRODUCT_PRICE_INVALID = "Product Price must have valid value"
+COM_REDSHOP_DISCOUNT_PRICE_MUST_BE_LOWER_THAN_PRODUCT_PRICE = "Discount Price must be lower than Product Price"
 COM_REDSHOP_PRODUCT_PRICE_END_DATE_MUST_MORE_THAN_START_DATE = "Start Date is not more than End Date"
 COM_REDSHOP_PRODUCT_PRICE_QUANTITY_END_MUST_MORE_THAN_QUANTITY_START = "Quantity Start is not more than Quantity End"
 COM_REDSHOP_PRODUCT_PRICE_SAVE_SUCCESS = "Products price save successfully"
diff --git a/component/admin/views/prices_detail/tmpl/default.php b/component/admin/views/prices_detail/tmpl/default.php
index cdff642516f..2c5d540543d 100644
--- a/component/admin/views/prices_detail/tmpl/default.php
+++ b/component/admin/views/prices_detail/tmpl/default.php
@@ -31,6 +31,11 @@
             form.product_price.focus();
             return;
         }
+        if (form.product_price.value <= form.discount_price.value) {
+            alert("<?php echo JText::_('COM_REDSHOP_DISCOUNT_PRICE_MUST_BE_LOWER_THAN_PRODUCT_PRICE', true); ?>");
+            form.product_price.focus();
+            return;
+        }
         submitform(pressbutton);
     };
 </script>