diff --git a/app/Views/stock/dustAndRoughStockDetails.php b/app/Views/stock/dustAndRoughStockDetails.php
index 405c77ff..7c490cae 100644
--- a/app/Views/stock/dustAndRoughStockDetails.php
+++ b/app/Views/stock/dustAndRoughStockDetails.php
@@ -598,6 +598,7 @@
             return 0;
         }
 
+        //one of the type in empty space character list is 10
         if (typeof input === 'string' && input.split('').map(char => char.charCodeAt(0))[0] == 10) {
             return 0;
         }