diff --git a/addons/web/static/src/js/views/list/list_renderer.js b/addons/web/static/src/js/views/list/list_renderer.js
index 4c2eed53e18..32ff58acd02 100644
--- a/addons/web/static/src/js/views/list/list_renderer.js
+++ b/addons/web/static/src/js/views/list/list_renderer.js
@@ -204,9 +204,11 @@ var ListRenderer = BasicRenderer.extend({
                 var field = self.state.fields[column.attrs.name];
                 var value = aggregateValues[column.attrs.name].value;
                 var help = aggregateValues[column.attrs.name].help;
-                var formattedValue = field_utils.format[field.type](value, field, {
-                    escape: true,
-                });
+                var formatFunc = field_utils.format[column.attrs.widget];
+                if (!formatFunc) {
+                    formatFunc = field_utils.format[field.type];
+                }
+                var formattedValue = formatFunc(value, field, {escape: true});
                 $cell.addClass('o_list_number').attr('title', help).html(formattedValue);
             }
             return $cell;
diff --git a/addons/web/static/tests/views/list_tests.js b/addons/web/static/tests/views/list_tests.js
index 970a895719d..92ae4033562 100644
--- a/addons/web/static/tests/views/list_tests.js
+++ b/addons/web/static/tests/views/list_tests.js
@@ -694,6 +694,25 @@ QUnit.module('Views', {
         list.destroy();
     });
 
+    QUnit.test('aggregates are formatted according to field widget', function (assert) {
+        assert.expect(1);
+
+        var list = createView({
+            View: ListView,
+            model: 'foo',
+            data: this.data,
+            arch: '<tree>' +
+                    '<field name="foo"/>' +
+                    '<field name="qux" widget="float_time" sum="Sum"/>' +
+                '</tree>',
+        });
+
+        assert.strictEqual(list.$('tfoot td:nth(2)').text(), '19:24',
+            "total should be formatted as a float_time");
+
+        list.destroy();
+    });
+
     QUnit.test('groups can be sorted on aggregates', function (assert) {
         assert.expect(10);