diff --git a/addons/web/static/src/js/views/graph/graph_model.js b/addons/web/static/src/js/views/graph/graph_model.js
index 8a7f5da6d5d..50e9f224697 100644
--- a/addons/web/static/src/js/views/graph/graph_model.js
+++ b/addons/web/static/src/js/views/graph/graph_model.js
@@ -114,13 +114,13 @@ return AbstractModel.extend({
      * @returns {Deferred}
      */
     _loadGraph: function () {
-        var fields = _.map(this.chart.groupedBy, function (groupBy) {
+        var groupedBy = this.chart.groupedBy.length ? this.chart.groupedBy : this.initialGroupBys;
+        var fields = _.map(groupedBy, function (groupBy) {
             return groupBy.split(':')[0];
         });
         if (this.chart.measure !== '__count__') {
             fields = fields.concat(this.chart.measure);
         }
-        var groupedBy = this.chart.groupedBy.length ? this.chart.groupedBy : this.initialGroupBys;
         return this._rpc({
                 model: this.modelName,
                 method: 'read_group',
diff --git a/addons/web/static/tests/views/graph_tests.js b/addons/web/static/tests/views/graph_tests.js
index 33b2fd8ffbd..c7d69b194ff 100644
--- a/addons/web/static/tests/views/graph_tests.js
+++ b/addons/web/static/tests/views/graph_tests.js
@@ -372,6 +372,30 @@ QUnit.module('Views', {
         });
     });
 
+    QUnit.test('reload graph with correct fields', function (assert) {
+        assert.expect(2);
+
+        var graph = createView({
+            View: GraphView,
+            model: 'foo',
+            data: this.data,
+            arch: '<graph>' +
+                    '<field name="product_id" type="row"/>' +
+                    '<field name="foo" type="measure"/>' +
+                '</graph>',
+            mockRPC: function (route, args) {
+                if (args.method === 'read_group') {
+                    assert.deepEqual(args.kwargs.fields, ['product_id', 'foo'],
+                        "should read the correct fields");
+                }
+                return this._super.apply(this, arguments);
+            },
+        });
+
+        graph.reload({groupBy: []});
+
+        graph.destroy();
+    });
 });
 
 });