diff --git a/addons/web/static/tests/helpers/mock_server.js b/addons/web/static/tests/helpers/mock_server.js
index e98a9abe5ea..9f4262378d5 100644
--- a/addons/web/static/tests/helpers/mock_server.js
+++ b/addons/web/static/tests/helpers/mock_server.js
@@ -95,19 +95,7 @@ var MockServer = Class.extend({
         if (logLevel === 2) {
             console.log('%c[rpc] request ' + route, 'color: blue; font-weight: bold;', args);
         }
-        var def;
-        try {
-            def = this._performRpc(route, args);
-        } catch (e) {
-            var error = {code: 200, data: {}, message: e.message};
-            if (logLevel === 1) {
-                console.warn('Mock: ' + route, error.message);
-            } else if (logLevel === 2) {
-                console.warn('%c[rpc] error response:', 'color: blue; font-weight: bold;', error.message);
-            }
-            return $.Deferred().reject(error, $.Event());
-        }
-        return def.then(function (result) {
+        return this._performRpc(route, args).then(function (result) {
             var resultString = JSON.stringify(result || false);
             if (logLevel === 1) {
                 console.log('Mock: ' + route, JSON.parse(resultString));
diff --git a/addons/web/static/tests/views/form_tests.js b/addons/web/static/tests/views/form_tests.js
index c3cdbdc62d0..5f7f34a2cc7 100644
--- a/addons/web/static/tests/views/form_tests.js
+++ b/addons/web/static/tests/views/form_tests.js
@@ -4839,6 +4839,13 @@ QUnit.module('Views', {
                 if (args.method === 'search_count') {
                     assert.strictEqual(args.model, 'test',
                         "should search_count on test");
+                    if (!args.kwargs.domain) {
+                        return $.Deferred().reject({
+                            code: 200,
+                            data: {},
+                            message: "MockServer._getRecords: given domain has to be an array.",
+                        }, $.Event());
+                    }
                 }
                 return this._super.apply(this, arguments);
             },
diff --git a/addons/web/static/tests/views/kanban_tests.js b/addons/web/static/tests/views/kanban_tests.js
index b2b84ff00d5..f7ea586da6c 100644
--- a/addons/web/static/tests/views/kanban_tests.js
+++ b/addons/web/static/tests/views/kanban_tests.js
@@ -391,7 +391,11 @@ QUnit.module('Views', {
             groupBy: ['product_id'],
             mockRPC: function (route, args) {
                 if (args.method === 'name_create') {
-                    throw new Error("Odoo server error");
+                    return $.Deferred().reject({
+                        code: 200,
+                        data: {},
+                        message: "Odoo server error",
+                    }, $.Event());
                 }
                 return this._super.apply(this, arguments);
             },