diff --git a/addons/project/static/src/views/project_calendar/project_calendar_controller.js b/addons/project/static/src/views/project_calendar/project_calendar_controller.js
index 24e61059f9c..c43cc6e50b8 100644
--- a/addons/project/static/src/views/project_calendar/project_calendar_controller.js
+++ b/addons/project/static/src/views/project_calendar/project_calendar_controller.js
@@ -10,6 +10,6 @@ export class ProjectCalendarController extends CalendarController {
     };
     setup() {
         super.setup(...arguments);
-        this.displayName += this.env._t(" - Tasks by Deadline");
+        this.env.config.setDisplayName(this.env.config.getDisplayName() + this.env._t(" - Tasks by Deadline"));
     }
 }
diff --git a/addons/project/static/tests/views/project_task_calendar/project_task_calendar_view_tests.js b/addons/project/static/tests/views/project_task_calendar/project_task_calendar_view_tests.js
new file mode 100644
index 00000000000..ac86be0313c
--- /dev/null
+++ b/addons/project/static/tests/views/project_task_calendar/project_task_calendar_view_tests.js
@@ -0,0 +1,53 @@
+/** @odoo-module **/
+
+import { createWebClient, doAction } from "@web/../tests/webclient/helpers";
+let serverData;
+QUnit.module("Project Task Calendar View", (hooks) => {
+    hooks.beforeEach(() => {
+        serverData = {
+            models: {
+                "project.task": {
+                    fields: {
+                        start: { string: "Date Start", type: "date" },
+                        stop: { string: "Date End", type: "date" },
+                    },
+                    records: [
+                        {
+                            id: 1,
+                            start: "2017-01-25",
+                            stop: "2017-01-26",
+                        }, {
+                            id: 2,
+                            start: "2017-01-02",
+                            stop: "2017-01-03",
+                        },
+                    ],
+                    methods: {
+                        check_access_rights: function () {
+                            return Promise.resolve(true);
+                        }
+                    }
+                },
+            },
+        }
+    });
+    QUnit.test("breadcrumb contains 'Tasks by deadline'", async function (assert) {
+        serverData.views = {
+            "project.task,1,calendar": `<calendar date_start="start" date_stop="stop" mode="day" js_class="project_calendar"/>`,
+            "project.task,false,search": `<search />`,
+        };
+        serverData.actions = {
+            1: {
+                id: 1,
+                name: "test",
+                res_model: "project.task",
+                type: "ir.actions.act_window",
+                views: [[1, "calendar"]],
+                context: {},
+            },
+        };
+        const webClient = await createWebClient({ serverData });
+        await doAction(webClient, 1);
+        assert.equal(document.querySelector(".o_last_breadcrumb_item span").textContent, 'test - Tasks by Deadline');
+    });
+});
diff --git a/addons/web/static/src/views/calendar/calendar_controller.js b/addons/web/static/src/views/calendar/calendar_controller.js
index 42f9e6ec4f9..d71a9fcebdb 100644
--- a/addons/web/static/src/views/calendar/calendar_controller.js
+++ b/addons/web/static/src/views/calendar/calendar_controller.js
@@ -51,7 +51,6 @@ export class CalendarController extends Component {
         }, {
             onWillStart: this.onWillStartModel.bind(this),
         });
-        this.displayName = this.env.config.getDisplayName();
 
         useSetupView({
             getLocalState: () => this.model.exportedState,
@@ -71,7 +70,6 @@ export class CalendarController extends Component {
             deleteRecord: this.deleteRecord.bind(this),
             editRecord: this.editRecord.bind(this),
             setDate: this.setDate.bind(this),
-            displayName: this.displayName,
         };
     }
     get containerProps() {