diff --git a/static/src/js/sign_image_upload.js b/static/src/js/sign_image_upload.js
index 6e6532c..21d6a39 100755
--- a/static/src/js/sign_image_upload.js
+++ b/static/src/js/sign_image_upload.js
@@ -108,8 +108,6 @@ patch(SignablePDFIframe.prototype, {
                         const body = signItem.el.querySelector('.sign_item_body') || signItem.el;
                         body.appendChild(newImg);
 
-                        this.signItemValues[signItem.id] = compressedDataUrl;
-
                         // Trigger validation/saving mechanism
                         // We might need to call a method to notify Odoo that value changed
                         // In standard sign, usually it listens to input or checks dirty state.