diff --git a/addons/web/static/src/js/_deprecated/data.js b/addons/web/static/src/js/_deprecated/data.js
index 791693bce67..f6a58367903 100644
--- a/addons/web/static/src/js/_deprecated/data.js
+++ b/addons/web/static/src/js/_deprecated/data.js
@@ -760,6 +760,9 @@ function rawify (data) {
     // replaces the value of relational fields by their raw value (the id, if
     // any, for many2ones and an array of ids for x2manys), in turn
     return _.mapObject(data, function (value) {
+        if (value instanceof moment) {
+            return moment;
+        }
         if (_.isObject(value)) {
             return value.type === 'record' ? value.res_id : value.res_ids;
         }
diff --git a/addons/web/static/test/fields/relational_fields_tests.js b/addons/web/static/test/fields/relational_fields_tests.js
index 50d0ddbeef8..e101bd2d8fd 100644
--- a/addons/web/static/test/fields/relational_fields_tests.js
+++ b/addons/web/static/test/fields/relational_fields_tests.js
@@ -345,6 +345,31 @@ QUnit.module('relational_fields', {
         form.$('input').click();
     });
 
+    QUnit.test('autocompletion in a many2one, in form view with a date field', function (assert) {
+        assert.expect(1);
+
+        var form = createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch: '<form>' +
+                    '<field name="bar"/>' +
+                    '<field name="date"/>' +
+                    '<field name="trululu" domain="[(\'bar\',\'=\',True)]"/>' +
+                '</form>',
+            res_id: 2,
+            mockRPC: function (route, args) {
+                if (args.method === 'name_search') {
+                    assert.deepEqual(args.kwargs.args, [["bar", "=", true]], "should not have a domain");
+                }
+                return this._super(route, args);
+            },
+        });
+        form.$buttons.find('.o_form_button_edit').click();
+
+        form.$('input:eq(2)').click();
+    });
+
     QUnit.test('creating record with many2one with option always_reload', function (assert) {
         assert.expect(2);