diff --git a/app/code/core/Mage/Sales/Model/Quote/Item.php b/app/code/core/Mage/Sales/Model/Quote/Item.php
index d914981ce22..d5bd3eb8a67 100644
--- a/app/code/core/Mage/Sales/Model/Quote/Item.php
+++ b/app/code/core/Mage/Sales/Model/Quote/Item.php
@@ -450,6 +450,13 @@ public function representProduct($product)
             if ($this->getParentItem() !== $stickWithinParent) {
                 return false;
             }
+
+            /**
+             * Bypass custom options checks for bundled child items
+             * This prevents cases of adding an additional child item to the quote
+             * when an existing child product is modified while the bundled item is in a cart
+             */
+            return true;
         }
 
         // Check options