diff --git a/addons/web/static/src/js/fields/basic_fields.js b/addons/web/static/src/js/fields/basic_fields.js
index 69fd7c5b791..d2649195111 100644
--- a/addons/web/static/src/js/fields/basic_fields.js
+++ b/addons/web/static/src/js/fields/basic_fields.js
@@ -268,7 +268,7 @@ var FieldDate = InputField.extend({
             this.datewidget = this._makeDatePicker();
             this.datewidget.on('datetime_changed', this, function () {
                 var value = this._getDateWidgetValue();
-                if (!value.isSame(this.value)) {
+                if ((!value && this.value) || (value && !value.isSame(this.value))) {
                     this._setValue(value);
                 }
             });
@@ -330,7 +330,8 @@ var FieldDateTime = FieldDate.extend({
      * @private
      */
     _getDateWidgetValue: function () {
-        return this.datewidget.get_value().add(-this.getSession().tzOffset, 'minutes');
+        var value = this.datewidget.get_value();
+        return value && value.add(-this.getSession().tzOffset, 'minutes');
     },
 
     /**
diff --git a/addons/web/static/src/js/widgets/date_picker.js b/addons/web/static/src/js/widgets/date_picker.js
index 4abab997666..1641f13f634 100644
--- a/addons/web/static/src/js/widgets/date_picker.js
+++ b/addons/web/static/src/js/widgets/date_picker.js
@@ -60,7 +60,7 @@ var DateWidget = Widget.extend({
         }
     },
     get_value: function() {
-        return this.get('value').clone();
+        return this.get('value') && this.get('value').clone();
     },
     set_value_from_ui: function() {
         var value = this.$input.val() || false;
diff --git a/addons/web/static/tests/fields/basic_fields_tests.js b/addons/web/static/tests/fields/basic_fields_tests.js
index cb61e21e376..f32f0b6ac61 100644
--- a/addons/web/static/tests/fields/basic_fields_tests.js
+++ b/addons/web/static/tests/fields/basic_fields_tests.js
@@ -1082,6 +1082,41 @@ QUnit.module('basic_fields', {
         list.destroy();
     });
 
+    QUnit.test('date field remove value', function (assert) {
+        assert.expect(4);
+
+        var form = createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch:'<form string="Partners"><field name="date"/></form>',
+            res_id: 1,
+            mockRPC: function (route, args) {
+                if (route === '/web/dataset/call_kw/partner/write') {
+                    assert.strictEqual(args.args[1].date, false, 'the correct value should be saved');
+                }
+                return this._super.apply(this, arguments);
+            },
+            translateParameters: {  // Avoid issues due to localization formats
+                date_format: '%m/%d/%Y',
+            },
+        });
+
+        // switch to edit mode
+        form.$buttons.find('.o_form_button_edit').click();
+        assert.strictEqual(form.$('.o_datepicker_input').val(), '02/03/2017',
+            'the date should be correct in edit mode');
+
+        $('.o_datepicker_input').val('').trigger('input').trigger('change');
+        assert.ok(!form.$('.o_datepicker_input').val());
+
+        // save
+        form.$buttons.find('.o_form_button_save').click();
+        assert.strictEqual(form.$('.o_form_field_date').text(), '',
+            'the selected date should be displayed after saving');
+        form.destroy();
+    });
+
 
     QUnit.module('FieldDatetime');
 
@@ -1206,6 +1241,45 @@ QUnit.module('basic_fields', {
         list.destroy();
     });
 
+    QUnit.test('datetime field remove value', function (assert) {
+        assert.expect(4);
+
+        var form = createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch:'<form string="Partners"><field name="datetime"/></form>',
+            res_id: 1,
+            mockRPC: function (route, args) {
+                if (route === '/web/dataset/call_kw/partner/write') {
+                    assert.strictEqual(args.args[1].datetime, false, 'the correct value should be saved');
+                }
+                return this._super.apply(this, arguments);
+            },
+            translateParameters: {  // Avoid issues due to localization formats
+                date_format: '%m/%d/%Y',
+                time_format: '%H:%M:%S',
+            },
+            session: {
+                tzOffset: 120
+            },
+        });
+
+        // switch to edit mode
+        form.$buttons.find('.o_form_button_edit').click();
+        assert.strictEqual(form.$('.o_datepicker_input').val(), '02/08/2017 12:00:00',
+            'the date time should be correct in edit mode');
+
+        $('.o_datepicker_input').val('').trigger('input').trigger('change');
+        assert.ok(!form.$('.o_datepicker_input').val());
+
+        // save
+        form.$buttons.find('.o_form_button_save').click();
+        assert.strictEqual(form.$('.o_form_field_date').text(), '',
+            'the selected date should be displayed after saving');
+        form.destroy();
+    });
+
 
     QUnit.module('FieldMonetary');