diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index d140a9adb62..40a895f6c90 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -3881,28 +3881,23 @@ instance.web.form.One2ManyListView = instance.web.ListView.extend({
         this.o2m.trigger_on_change();
     },
     is_valid: function () {
-        var editor = this.editor;
-        var form = editor.form;
-        // If no edition is pending, the listview can not be invalid (?)
-        if (!editor.record) {
-            return true
-        }
-        // If the form has not been modified, the view can only be valid
-        // NB: is_dirty will also be set on defaults/onchanges/whatever?
-        // oe_form_dirty seems to only be set on actual user actions
-        if (!form.$el.is('.oe_form_dirty')) {
+        var self = this;
+        if (!this.editable()){
             return true;
         }
         this.o2m._dirty_flag = true;
-
-        // Otherwise validate internal form
-        return _(form.fields).chain()
-            .invoke(function () {
-                this._check_css_flags();
-                return this.is_valid();
-            })
-            .all(_.identity)
-            .value();
+        var r;
+        return _.every(this.records.records, function(record){
+            r = record;
+            _.each(self.editor.form.fields, function(field){
+                field.set_value(r.attributes[field.name]);
+            });
+            return _.every(self.editor.form.fields, function(field){
+                field.process_modifiers();
+                field._check_css_flags();
+                return field.is_valid();
+            });
+        });
     },
     do_add_record: function () {
         if (this.editable()) {