diff --git a/addons/web/static/src/views/list/list_arch_parser.js b/addons/web/static/src/views/list/list_arch_parser.js
index dada4c7baaf..6884358f558 100644
--- a/addons/web/static/src/views/list/list_arch_parser.js
+++ b/addons/web/static/src/views/list/list_arch_parser.js
@@ -135,7 +135,7 @@ export class ListArchParser extends XMLParser {
                     // FIXME: this is dumb, we encode it into a weird object so that the widget
                     // can decode it later...
                     node: encodeObjectForTemplate({ attrs: widgetInfo.rawAttrs }).slice(1, -1),
-                    className: node.getAttribute("class"),
+                    className: node.getAttribute("class") || "",
                 };
                 columns.push({
                     ...widgetInfo,
diff --git a/addons/web/static/src/views/widgets/standard_widget_props.js b/addons/web/static/src/views/widgets/standard_widget_props.js
index e34b62f6897..106c470a322 100644
--- a/addons/web/static/src/views/widgets/standard_widget_props.js
+++ b/addons/web/static/src/views/widgets/standard_widget_props.js
@@ -3,4 +3,9 @@
 export const standardWidgetProps = {
     readonly: { type: Boolean, optional: true },
     record: { type: Object },
+    // TODO TO REMOVE - ListView - FGE
+    options: { type: Object, optional: true },
+    rawAttrs: { type: Object, optional: true },
+    WidgetComponent: { type: Function, optional: true },
+    className: { type: String, optional: true },
 };
diff --git a/odoo/addons/base/rng/common.rng b/odoo/addons/base/rng/common.rng
index f5114603cab..eb6073252bb 100644
--- a/odoo/addons/base/rng/common.rng
+++ b/odoo/addons/base/rng/common.rng
@@ -432,4 +432,11 @@
         </rng:element>
     </rng:define>
 
+    <rng:define name="widget">
+        <rng:element name="widget">
+            <rng:attribute name="name"/>
+            <rng:optional><rng:attribute name="options"/></rng:optional>
+        </rng:element>
+    </rng:define>
+
 </rng:grammar>
diff --git a/odoo/addons/base/rng/tree_view.rng b/odoo/addons/base/rng/tree_view.rng
index 6caca915e2e..ed194bbda6e 100644
--- a/odoo/addons/base/rng/tree_view.rng
+++ b/odoo/addons/base/rng/tree_view.rng
@@ -76,6 +76,7 @@
                     </rng:element>
                     <rng:ref name="control"/>
                     <rng:ref name="field"/>
+                    <rng:ref name="widget"/>
                     <rng:ref name="separator"/>
                     <rng:ref name="tree"/>
                     <rng:ref name="groupby"/>