diff --git a/addons/web/static/src/js/views/pivot/pivot_model.js b/addons/web/static/src/js/views/pivot/pivot_model.js
index 6eddd44ffe7..76e22c8b4e5 100644
--- a/addons/web/static/src/js/views/pivot/pivot_model.js
+++ b/addons/web/static/src/js/views/pivot/pivot_model.js
@@ -17,6 +17,7 @@ odoo.define('web.PivotModel', function (require) {
  */
 
 var AbstractModel = require('web.AbstractModel');
+var concurrency = require('web.concurrency');
 var core = require('web.core');
 var session = require('web.session');
 var utils = require('web.utils');
@@ -32,6 +33,7 @@ var PivotModel = AbstractModel.extend({
         this._super.apply(this, arguments);
         this.numbering = {};
         this.data = null;
+        this._loadDataDropPrevious = new concurrency.DropPrevious();
     },
 
     //--------------------------------------------------------------------------
@@ -532,7 +534,7 @@ var PivotModel = AbstractModel.extend({
             }
         }
 
-        return $.when.apply(null, groupBys.map(function (groupBy) {
+        return this._loadDataDropPrevious.add($.when.apply(null, groupBys.map(function (groupBy) {
             return self._rpc({
                     model: self.modelName,
                     method: 'read_group',
@@ -542,7 +544,7 @@ var PivotModel = AbstractModel.extend({
                     groupBy: groupBy,
                     lazy: false,
                 });
-        })).then(function () {
+        }))).then(function () {
             var data = Array.prototype.slice.call(arguments);
             if (data[0][0].__count === 0) {
                 self.data.has_data = false;
diff --git a/addons/web/static/tests/views/pivot_tests.js b/addons/web/static/tests/views/pivot_tests.js
index 198fd0189ae..8508c7e7fed 100644
--- a/addons/web/static/tests/views/pivot_tests.js
+++ b/addons/web/static/tests/views/pivot_tests.js
@@ -1001,4 +1001,37 @@ QUnit.module('Views', {
 
         pivot.destroy();
     });
+
+    QUnit.test('parallel data loading should discard all but the last one', function (assert) {
+        assert.expect(2);
+
+        var def;
+
+        var pivot = createView({
+            View: PivotView,
+            model: "partner",
+            data: this.data,
+            arch: '<pivot>' +
+                      '<field name="foo" type="measure"/>' +
+                  '</pivot>',
+            mockRPC: function (route, args) {
+                var result = this._super.apply(this, arguments);
+                if (args.method === 'read_group') {
+                    return $.when(def).then(_.constant(result));
+                }
+                return result;
+            },
+        });
+
+        def = $.Deferred();
+        pivot.update({groupBy: ['product_id']});
+        pivot.update({groupBy: ['product_id', 'customer']});
+        def.resolve();
+
+        assert.strictEqual(pivot.$('.o_pivot_cell_value').length, 6,
+            "should have 6 cells");
+        assert.strictEqual(pivot.$('tbody tr').length, 6,
+            "should have 6 rows");
+        pivot.destroy();
+    });
 });});