diff --git a/index.php b/index.php
index 47429d3..8a41e16 100644
--- a/index.php
+++ b/index.php
@@ -117,7 +117,7 @@ require_once __DIR__ . '/includes/header.php';
                                     <span class="original"><?= formatCurrency($product['price']) ?></span>
                                 <?php endif; ?>
                             </div>
-                            <button class="btn btn-primary btn-block add-to-cart" data-id="<?= $product['product_id'] ?>">
+                            <button class="btn btn-primary btn-block add-to-cart-btn" data-product-id="<?= $product['product_id'] ?>" onclick="addToCart('<?= $product['product_id'] ?>', 1)">
                                 <i class="fas fa-shopping-bag"></i> Add to Cart
                             </button>
                         </div>