diff --git a/app/frontend/src/javascript/components/plans/plan-form.tsx b/app/frontend/src/javascript/components/plans/plan-form.tsx
index 082dcefce..a41731269 100644
--- a/app/frontend/src/javascript/components/plans/plan-form.tsx
+++ b/app/frontend/src/javascript/components/plans/plan-form.tsx
@@ -26,6 +26,8 @@ import { PlanPricingForm } from './plan-pricing-form';
 import { AdvancedAccountingForm } from '../accounting/advanced-accounting-form';
 import { FabTabs } from '../base/fab-tabs';
 import { PlanLimitForm } from './plan-limit-form';
+import { UnsavedFormAlert } from '../form/unsaved-form-alert';
+import { UIRouter } from '@uirouter/angularjs';
 
 declare const Application: IApplication;
 
@@ -35,12 +37,13 @@ interface PlanFormProps {
   onError: (message: string) => void,
   onSuccess: (message: string) => void,
   beforeSubmit?: (data: Plan) => void,
+  uiRouter: UIRouter
 }
 
 /**
  * Form to edit or create subscription plans
  */
-export const PlanForm: React.FC<PlanFormProps> = ({ action, plan, onError, onSuccess, beforeSubmit }) => {
+export const PlanForm: React.FC<PlanFormProps> = ({ action, plan, onError, onSuccess, beforeSubmit, uiRouter }) => {
   const { handleSubmit, register, control, formState, setValue } = useForm<Plan>({ defaultValues: { ...plan } });
   const output = useWatch<Plan>({ control }); // eslint-disable-line
   const { t } = useTranslation('admin');
@@ -316,6 +319,7 @@ export const PlanForm: React.FC<PlanFormProps> = ({ action, plan, onError, onSuc
       </header>
 
       <form onSubmit={handleSubmit(onSubmit)}>
+        <UnsavedFormAlert uiRouter={uiRouter} formState={formState} />
         <FabTabs tabs={[
           {
             id: 'settings',
@@ -350,4 +354,4 @@ const PlanFormWrapper: React.FC<PlanFormProps> = (props) => {
     </Loader>
   );
 };
-Application.Components.component('planForm', react2angular(PlanFormWrapper, ['action', 'plan', 'onError', 'onSuccess']));
+Application.Components.component('planForm', react2angular(PlanFormWrapper, ['action', 'plan', 'onError', 'onSuccess', 'uiRouter']));
diff --git a/app/frontend/src/javascript/controllers/admin/plans.js b/app/frontend/src/javascript/controllers/admin/plans.js
index ab80d0824..5ef815c29 100644
--- a/app/frontend/src/javascript/controllers/admin/plans.js
+++ b/app/frontend/src/javascript/controllers/admin/plans.js
@@ -21,11 +21,14 @@
 /**
  * Controller used in the plan creation form
  */
-Application.Controllers.controller('NewPlanController', ['$scope', '$uibModal', 'groups', 'prices', 'partners', 'CSRF', '$state', 'growl', '_t', 'planCategories',
-  function ($scope, $uibModal, groups, prices, partners, CSRF, $state, growl, _t, planCategories) {
+Application.Controllers.controller('NewPlanController', ['$scope', '$uibModal', 'groups', 'prices', 'partners', 'CSRF', '$state', 'growl', '_t', '$uiRouter',
+  function ($scope, $uibModal, groups, prices, partners, CSRF, $state, growl, _t, $uiRouter) {
     // protection against request forgery
     CSRF.setMetaTags();
 
+    // the following item is used by the UnsavedFormAlert component to detect a page change
+    $scope.uiRouter = $uiRouter;
+
     /**
      * Shows an error message forwarded from a child component
      */
@@ -46,13 +49,16 @@ Application.Controllers.controller('NewPlanController', ['$scope', '$uibModal',
 /**
  * Controller used in the plan edition form
  */
-Application.Controllers.controller('EditPlanController', ['$scope', 'groups', 'plans', 'planPromise', 'machines', 'spaces', 'prices', 'partners', 'CSRF', '$state', '$transition$', 'growl', '$filter', '_t', 'Plan', 'planCategories',
-  function ($scope, groups, plans, planPromise, machines, spaces, prices, partners, CSRF, $state, $transition$, growl, $filter, _t, Plan, planCategories) {
+Application.Controllers.controller('EditPlanController', ['$scope', 'groups', 'plans', 'planPromise', 'machines', 'spaces', 'prices', 'partners', 'CSRF', '$state', '$transition$', 'growl', '$filter', '_t', '$uiRouter',
+  function ($scope, groups, plans, planPromise, machines, spaces, prices, partners, CSRF, $state, $transition$, growl, $filter, _t, $uiRouter) {
     // protection against request forgery
     CSRF.setMetaTags();
 
     $scope.suscriptionPlan = cleanPlan(planPromise);
 
+    // the following item is used by the UnsavedFormAlert component to detect a page change
+    $scope.uiRouter = $uiRouter;
+
     /**
      * Shows an error message forwarded from a child component
      */
diff --git a/app/frontend/src/javascript/models/plan.ts b/app/frontend/src/javascript/models/plan.ts
index 8c469610a..a93b07059 100644
--- a/app/frontend/src/javascript/models/plan.ts
+++ b/app/frontend/src/javascript/models/plan.ts
@@ -44,7 +44,7 @@ export interface Plan {
     partnership?: boolean,
     partners?: Array<Partner>,
     advanced_accounting_attributes?: AdvancedAccounting,
-    plan_limitations_attributes: Array<PlanLimitation>
+    plan_limitations_attributes?: Array<PlanLimitation>
 }
 
 export interface PlansDuration {
diff --git a/app/frontend/templates/admin/plans/edit.html b/app/frontend/templates/admin/plans/edit.html
index 161d1bd59..9ad6077a8 100644
--- a/app/frontend/templates/admin/plans/edit.html
+++ b/app/frontend/templates/admin/plans/edit.html
@@ -13,4 +13,4 @@
     </div>
 </section>
 
-<plan-form action="'update'" plan="suscriptionPlan" on-error="onError" on-success="onSuccess"></plan-form>
+<plan-form action="'update'" plan="suscriptionPlan" on-error="onError" on-success="onSuccess" ui-router="uiRouter"></plan-form>
diff --git a/app/frontend/templates/admin/plans/new.html b/app/frontend/templates/admin/plans/new.html
index a5cddf0f6..7315fe38b 100644
--- a/app/frontend/templates/admin/plans/new.html
+++ b/app/frontend/templates/admin/plans/new.html
@@ -14,4 +14,4 @@
     </div>
 </section>
 
-<plan-form action="'create'" on-error="onError" on-success="onSuccess"></plan-form>
+<plan-form action="'create'" on-error="onError" on-success="onSuccess" ui-router="uiRouter"></plan-form>
diff --git a/test/frontend/components/plans/plan-form.test.tsx b/test/frontend/components/plans/plan-form.test.tsx
index 66af009ff..1ef115d8d 100644
--- a/test/frontend/components/plans/plan-form.test.tsx
+++ b/test/frontend/components/plans/plan-form.test.tsx
@@ -7,6 +7,7 @@ import userEvent from '@testing-library/user-event';
 import plans from '../../__fixtures__/plans';
 import machines from '../../__fixtures__/machines';
 import { tiptapEvent } from '../../__lib__/tiptap';
+import { uiRouter } from '../../__lib__/ui-router';
 
 describe('PlanForm', () => {
   const onError = jest.fn();
@@ -14,7 +15,7 @@ describe('PlanForm', () => {
   const beforeSubmit = jest.fn();
 
   test('render create PlanForm', async () => {
-    render(<PlanForm action="create" onError={onError} onSuccess={onSuccess} />);
+    render(<PlanForm action="create" onError={onError} onSuccess={onSuccess} uiRouter={uiRouter} />);
     await waitFor(() => screen.getByRole('combobox', { name: /app.admin.plan_form.group/ }));
     expect(screen.getByLabelText(/app.admin.plan_form.name/)).toBeInTheDocument();
     expect(screen.getByLabelText(/app.admin.plan_form.transversal/)).toBeInTheDocument();
@@ -35,7 +36,7 @@ describe('PlanForm', () => {
   });
 
   test('create new plan', async () => {
-    render(<PlanForm action="create" onError={onError} onSuccess={onSuccess} beforeSubmit={beforeSubmit} />);
+    render(<PlanForm action="create" onError={onError} onSuccess={onSuccess} beforeSubmit={beforeSubmit} uiRouter={uiRouter} />);
     await waitFor(() => screen.getByRole('combobox', { name: /app.admin.plan_form.group/ }));
     const user = userEvent.setup();
     // base_name
@@ -98,7 +99,7 @@ describe('PlanForm', () => {
 
   test('render update PlanForm with partner', async () => {
     const plan = plans[1];
-    render(<PlanForm action="update" plan={plan} onError={onError} onSuccess={onSuccess} />);
+    render(<PlanForm action="update" plan={plan} onError={onError} onSuccess={onSuccess} uiRouter={uiRouter} />);
     await waitFor(() => screen.getByRole('combobox', { name: /app.admin.plan_pricing_form.copy_prices_from/ }));
     expect(screen.getByLabelText(/app.admin.plan_form.name/)).toBeInTheDocument();
     expect(screen.queryByLabelText(/app.admin.plan_form.transversal/)).toBeNull();
@@ -123,14 +124,14 @@ describe('PlanForm', () => {
   });
 
   test('selecting transversal plan disables group select', async () => {
-    render(<PlanForm action="create" onError={onError} onSuccess={onSuccess} />);
+    render(<PlanForm action="create" onError={onError} onSuccess={onSuccess} uiRouter={uiRouter} />);
     await waitFor(() => screen.getByRole('combobox', { name: /app.admin.plan_form.group/ }));
     fireEvent.click(screen.getByRole('switch', { name: /app.admin.plan_form.transversal/ }));
     expect(screen.queryByRole('combobox', { name: /app.admin.plan_form.group/ })).toBeNull();
   });
 
   test('selecting partner plan shows partner selection', async () => {
-    render(<PlanForm action="create" onError={onError} onSuccess={onSuccess} />);
+    render(<PlanForm action="create" onError={onError} onSuccess={onSuccess} uiRouter={uiRouter} />);
     await waitFor(() => screen.getByRole('combobox', { name: /app.admin.plan_form.group/ }));
     fireEvent.click(screen.getByRole('switch', { name: /app.admin.plan_form.partner_plan/ }));
     expect(screen.getByLabelText(/app.admin.plan_form.notified_partner/));
@@ -138,7 +139,7 @@ describe('PlanForm', () => {
   });
 
   test('creating a new partner selects him by default', async () => {
-    render(<PlanForm action="create" onError={onError} onSuccess={onSuccess} />);
+    render(<PlanForm action="create" onError={onError} onSuccess={onSuccess} uiRouter={uiRouter} />);
     await waitFor(() => screen.getByRole('combobox', { name: /app.admin.plan_form.group/ }));
     fireEvent.click(screen.getByRole('switch', { name: /app.admin.plan_form.partner_plan/ }));
     fireEvent.click(screen.getByRole('button', { name: /app.admin.plan_form.new_user/ }));
@@ -157,7 +158,7 @@ describe('PlanForm', () => {
   test('update plan prices', async () => {
     const plan = plans[1];
     const machine = machines[1];
-    render(<PlanForm action="update" plan={plan} onError={onError} onSuccess={onSuccess} beforeSubmit={beforeSubmit} />);
+    render(<PlanForm action="update" plan={plan} onError={onError} onSuccess={onSuccess} beforeSubmit={beforeSubmit} uiRouter={uiRouter} />);
     await waitFor(() => screen.getByLabelText(new RegExp(machine.name)));
     // update machine price
     fireEvent.change(screen.getByLabelText(new RegExp(machine.name)), { target: { value: 42.42 } });