diff --git a/website_sale_aplicoop/static/src/js/website_sale.js b/website_sale_aplicoop/static/src/js/website_sale.js
index 9ccd9f7..b88bbee 100644
--- a/website_sale_aplicoop/static/src/js/website_sale.js
+++ b/website_sale_aplicoop/static/src/js/website_sale.js
@@ -796,6 +796,24 @@
                 var isOutOfStock =
                     (form.getAttribute("data-out-of-stock") || "false") === "true" ||
                     (cartBtn.getAttribute("data-out-of-stock") || "false") === "true";
+
+                // Fallback guards in case cached markup drops the data attribute
+                if (!isOutOfStock) {
+                    var btnTitle = (cartBtn.getAttribute("title") || "").toLowerCase();
+                    var btnAria = (cartBtn.getAttribute("aria-label") || "").toLowerCase();
+                    var iconEl = cartBtn.querySelector("i");
+                    var hasBanIcon = iconEl && iconEl.classList.contains("fa-ban");
+
+                    if (
+                        hasBanIcon ||
+                        btnTitle.includes("out of stock") ||
+                        btnTitle.includes("sin stock") ||
+                        btnAria.includes("out of stock") ||
+                        btnAria.includes("sin stock")
+                    ) {
+                        isOutOfStock = true;
+                    }
+                }
                 if (isOutOfStock) {
                     var labels = self._getLabels();
                     self._showNotification(