diff --git a/snippets/shx-3d-render-input.liquid b/snippets/shx-3d-render-input.liquid
index 2f7b440..8f095a5 100644
--- a/snippets/shx-3d-render-input.liquid
+++ b/snippets/shx-3d-render-input.liquid
@@ -575,7 +575,7 @@
                 this.requiredPlaceholder.setAttribute('form', 'product-form-' + this.section_id);
                 this.requiredPlaceholder.name = 'properties[Checkbox]';
                 this.requiredPlaceholder.required = true;
-                this.requiredCheckbox.checked = false; // Default unchecked
+                this.requiredPlaceholder.checked = false; // Default unchecked
                 this.requiredPlaceholder.addEventListener('input', (event) => {
                     event.target.checked = false;
                     return false;