diff --git a/addons/web/static/src/js/fields/relational_fields.js b/addons/web/static/src/js/fields/relational_fields.js
index 5856b59455a..aa71fca9c25 100644
--- a/addons/web/static/src/js/fields/relational_fields.js
+++ b/addons/web/static/src/js/fields/relational_fields.js
@@ -876,10 +876,15 @@ var FieldX2Many = AbstractField.extend({
         this.pager = new Pager(this, this.value.count, this.value.offset + 1, this.value.limit, {
             single_page_hidden: true,
             withAccessKey: false,
+            validate: function () {
+                var isList = self.view.arch.tag === 'tree';
+                // TODO: we should have some common method in the basic renderer...
+                return isList ? self.renderer.unselectRow() : $.when();
+            },
         });
         this.pager.on('pager_changed', this, function (new_state) {
-            this.trigger_up('load', {
-                id: this.value.id,
+            self.trigger_up('load', {
+                id: self.value.id,
                 limit: new_state.limit,
                 offset: new_state.current_min - 1,
                 on_success: function (value) {
diff --git a/addons/web/static/tests/fields/relational_fields_tests.js b/addons/web/static/tests/fields/relational_fields_tests.js
index 5891c5d1515..8aeca04a509 100644
--- a/addons/web/static/tests/fields/relational_fields_tests.js
+++ b/addons/web/static/tests/fields/relational_fields_tests.js
@@ -4361,6 +4361,83 @@ QUnit.module('relational_fields', {
         form.destroy();
     });
 
+    QUnit.test('editable one2many list, required field and pager', function (assert) {
+        assert.expect(1);
+
+        this.data.turtle.records.push({id:4, turtle_foo: 'stephen hawking'});
+        this.data.turtle.fields.turtle_foo.required = true;
+        this.data.partner.records[0].turtles = [1,2,3,4];
+
+        var form = createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch: '<form string="Partners">' +
+                    '<field name="turtles">' +
+                        '<tree editable="bottom" limit="3">' +
+                            '<field name="turtle_foo"/>' +
+                        '</tree>' +
+                    '</field>' +
+                '</form>',
+            res_id: 1,
+        });
+
+        // add a (empty) record
+        form.$buttons.find('.o_form_button_edit').click();
+        form.$('.o_field_x2many_list_row_add a').click();
+
+        // go on next page. The new record is not valid and should be discarded
+        form.$('.o_pager_next').click();
+        assert.strictEqual(form.$('tr.o_data_row').length, 1,
+            "should have 1 data rows");
+
+        form.destroy();
+    });
+
+    QUnit.test('editable one2many list, required field, pager and confirm discard', function (assert) {
+        assert.expect(3);
+
+        this.data.turtle.records.push({id:4, turtle_foo: 'stephen hawking'});
+        this.data.turtle.fields.turtle_foo.required = true;
+        this.data.partner.records[0].turtles = [1,2,3,4];
+
+        var form = createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch: '<form string="Partners">' +
+                    '<field name="turtles">' +
+                        '<tree editable="bottom" limit="3">' +
+                            '<field name="turtle_foo"/>' +
+                            '<field name="turtle_int"/>' +
+                        '</tree>' +
+                    '</field>' +
+                '</form>',
+            res_id: 1,
+        });
+
+        // add a record with a dirty state, but not valid
+        form.$buttons.find('.o_form_button_edit').click();
+        form.$('.o_field_x2many_list_row_add a').click();
+        form.$('input[name="turtle_int"]').val(4321).trigger('input');
+
+        // go to next page. The new record is not valid, but dirty. we should
+        // see a confirm dialog
+        form.$('.o_pager_next').click();
+
+        assert.strictEqual(form.$('.o_cp_pager').text().trim(), '1-3 / 4',
+            "pager should still display the correct total");
+
+        // click on cancel
+        $('.modal .modal-footer .btn-default').click(); // click on cancel
+
+        assert.strictEqual(form.$('.o_cp_pager').text().trim(), '1-3 / 4',
+            "pager should again display the correct total");
+        assert.strictEqual(form.$('.o_field_one2many input.o_field_invalid').length, 1,
+            "there should be an invalid input in the one2many");
+        form.destroy();
+    });
+
     QUnit.test('unselecting a line with missing required data', function (assert) {
         assert.expect(5);