diff --git a/addons/web/static/src/js/views/basic/basic_model.js b/addons/web/static/src/js/views/basic/basic_model.js
index a55d2b2723b..046c810c437 100644
--- a/addons/web/static/src/js/views/basic/basic_model.js
+++ b/addons/web/static/src/js/views/basic/basic_model.js
@@ -2300,60 +2300,48 @@ var BasicModel = AbstractModel.extend({
                         record._changes[name] = x2manyList.id;
                         var many2ones = {};
                         var r;
+                        var isCommandList = result[name].length && _.isArray(result[name][0]);
+                        if (!isCommandList) {
+                            result[name] = [[6, false, result[name]]];
+                        }
                         _.each(result[name], function (value) {
-                            if (_.isArray(value)) {
-                                // value is a command
-                                if (value[0] === 0) {
-                                    // CREATE
-                                    r = self._makeDataPoint({
-                                        modelName: x2manyList.model,
-                                        context: x2manyList.context,
-                                        fieldsInfo: fieldsInfo,
-                                        fields: fields,
-                                        viewType: viewType,
-                                    });
-                                    x2manyList._changes = x2manyList._changes || [];
-                                    x2manyList._changes.push(r.id);
-
-                                    // this is necessary so the fields are initialized
-                                    _.each(r.getFieldNames(), function (fieldName) {
-                                        r.data[fieldName] = null;
-                                    });
-
-                                    r._changes = _.defaults(value[2], r.data);
-                                    for (var name in r._changes) {
-                                        var isFieldInView = name in r.fields;
-                                        if (isFieldInView && r.fields[name].type === 'many2one') {
-                                            var rec = self._makeDataPoint({
-                                                context: r.context,
-                                                modelName: r.fields[name].relation,
-                                                data: {id: r._changes[name]}
-                                            });
-                                            r._changes[name] = rec.id;
-                                            many2ones[name] = true;
-                                        }
-                                    }
-                                }
-                                if (value[0] === 6) {
-                                    // REPLACE_WITH
-                                    x2manyList.res_ids = value[2];
-                                    x2manyList.count = x2manyList.res_ids.length;
-                                    defs.push(self._readUngroupedList(x2manyList));
-                                }
-                            } else {
-                                // value is an id
+                            // value is a command
+                            if (value[0] === 0) {
+                                // CREATE
                                 r = self._makeDataPoint({
                                     modelName: x2manyList.model,
                                     context: x2manyList.context,
                                     fieldsInfo: fieldsInfo,
                                     fields: fields,
-                                    res_id: value,
                                     viewType: viewType,
                                 });
-                                if (!x2manyList._changes) {
-                                    x2manyList._changes = [];
-                                }
+                                x2manyList._changes = x2manyList._changes || [];
                                 x2manyList._changes.push(r.id);
+
+                                // this is necessary so the fields are initialized
+                                _.each(r.getFieldNames(), function (fieldName) {
+                                    r.data[fieldName] = null;
+                                });
+
+                                r._changes = _.defaults(value[2], r.data);
+                                for (var name in r._changes) {
+                                    var isFieldInView = name in r.fields;
+                                    if (isFieldInView && r.fields[name].type === 'many2one') {
+                                        var rec = self._makeDataPoint({
+                                            context: r.context,
+                                            modelName: r.fields[name].relation,
+                                            data: {id: r._changes[name]}
+                                        });
+                                        r._changes[name] = rec.id;
+                                        many2ones[name] = true;
+                                    }
+                                }
+                            }
+                            if (value[0] === 6) {
+                                // REPLACE_WITH
+                                x2manyList.res_ids = value[2];
+                                x2manyList.count = x2manyList.res_ids.length;
+                                defs.push(self._readUngroupedList(x2manyList));
                             }
                         });
 
diff --git a/addons/web/static/tests/fields/relational_fields_tests.js b/addons/web/static/tests/fields/relational_fields_tests.js
index 44b41219d52..2c6d35bc915 100644
--- a/addons/web/static/tests/fields/relational_fields_tests.js
+++ b/addons/web/static/tests/fields/relational_fields_tests.js
@@ -3579,6 +3579,31 @@ QUnit.module('relational_fields', {
         form.destroy();
     });
 
+    QUnit.test('many2many list: list of id as default value', function (assert) {
+        assert.expect(1);
+
+        this.data.partner.fields.turtles.default = [2, 3];
+        this.data.partner.fields.turtles.type = "many2many";
+
+        var form = createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch:'<form string="Partners">' +
+                    '<field name="turtles">' +
+                        '<tree>' +
+                            '<field name="turtle_foo"/>' +
+                        '</tree>' +
+                    '</field>' +
+                '</form>',
+        });
+
+        assert.strictEqual(form.$('td.o_data_cell').text(), "blipkawa",
+            "should have loaded default data");
+
+        form.destroy();
+    });
+
     QUnit.test('many2many list with x2many: add a record', function (assert) {
         assert.expect(18);