diff --git a/src/ItemCode.php b/src/ItemCode.php
index 1ddd179..e16f27b 100644
--- a/src/ItemCode.php
+++ b/src/ItemCode.php
@@ -186,6 +186,12 @@ public static function extract($generatedItemCode)
         ];
     }
 
+    /**
+     * Removes binding from the item code
+     *
+     * @param $itemCode
+     * @return int
+     */
     public static function removeBinding($itemCode)
     {
         // Extract item code