diff --git a/src/Controller/Admin/DevisController.php b/src/Controller/Admin/DevisController.php
index 0112556..5039119 100644
--- a/src/Controller/Admin/DevisController.php
+++ b/src/Controller/Admin/DevisController.php
@@ -267,7 +267,7 @@ class DevisController extends AbstractController
         $hadOld = null !== $devis->getUnsignedPdf();
         $uploadDir = $kernel->getProjectDir().'/public/uploads/devis';
 
-        // @codeCoverageIgnoreStart -- Regeneration : supprime l'ancien fichier
+        // Regeneration : supprime l'ancien fichier
         if ($hadOld) {
             $oldPath = $uploadDir.'/'.$devis->getUnsignedPdf();
             if (file_exists($oldPath)) {
@@ -275,7 +275,6 @@ class DevisController extends AbstractController
             }
             $devis->setUnsignedPdf(null);
         }
-        // @codeCoverageIgnoreEnd
 
         // UploadedFile avec test=true : contourne la verification "is_uploaded_file"
         // qui rejetterait un fichier genere serveur-side
diff --git a/tests/Controller/Admin/DevisControllerTest.php b/tests/Controller/Admin/DevisControllerTest.php
index ee8132d..3b4c978 100644
--- a/tests/Controller/Admin/DevisControllerTest.php
+++ b/tests/Controller/Admin/DevisControllerTest.php
@@ -1615,6 +1615,130 @@ class DevisControllerTest extends TestCase
         @rmdir($tmpDir);
     }
 
+    public function testGeneratePdfWithExistingPdf(): void
+    {
+        $on = new \App\Entity\OrderNumber('04/2026-00095');
+        $devis = new \App\Entity\Devis($on, 'secret');
+        $devis->setTotalHt('50.00');
+        $devis->setTotalTva('0.00');
+        $devis->setTotalTtc('50.00');
+
+        $tmpDir = sys_get_temp_dir().'/devis_pdf_old_'.bin2hex(random_bytes(4));
+        mkdir($tmpDir.'/public/uploads/devis', 0777, true);
+
+        // Simulate existing PDF file
+        $oldPdfName = 'old-devis.pdf';
+        file_put_contents($tmpDir.'/public/uploads/devis/'.$oldPdfName, '%PDF-old');
+        $devis->setUnsignedPdf($oldPdfName);
+
+        $repo = $this->createStub(\Doctrine\ORM\EntityRepository::class);
+        $repo->method('find')->willReturn($devis);
+        $em = $this->createMock(EntityManagerInterface::class);
+        $em->method('getRepository')->willReturn($repo);
+        $em->expects($this->once())->method('flush');
+
+        $kernel = $this->createStub(\Symfony\Component\HttpKernel\KernelInterface::class);
+        $kernel->method('getProjectDir')->willReturn($tmpDir);
+
+        $twig = $this->createStub(Environment::class);
+
+        $controller = new DevisController(
+            $em,
+            $this->createStub(\App\Service\OrderNumberService::class),
+            $this->createStub(\App\Service\DevisService::class),
+            $this->createStub(\App\Service\MeilisearchService::class),
+        );
+
+        $session = new Session(new MockArraySessionStorage());
+        $stack = $this->createStub(RequestStack::class);
+        $stack->method('getSession')->willReturn($session);
+        $router = $this->createStub(RouterInterface::class);
+        $router->method('generate')->willReturn('/redirect');
+        $container = $this->createStub(ContainerInterface::class);
+        $container->method('has')->willReturnMap([
+            ['twig', true], ['router', true], ['security.authorization_checker', true],
+            ['security.token_storage', true], ['request_stack', true], ['parameter_bag', true],
+        ]);
+        $container->method('get')->willReturnMap([
+            ['twig', $this->createStub(Environment::class)],
+            ['router', $router],
+            ['security.authorization_checker', $this->createStub(AuthorizationCheckerInterface::class)],
+            ['security.token_storage', $this->createStub(TokenStorageInterface::class)],
+            ['request_stack', $stack],
+            ['parameter_bag', $this->createStub(ParameterBagInterface::class)],
+        ]);
+        $controller->setContainer($container);
+
+        $response = $controller->generatePdf(1, $kernel, $twig);
+        $this->assertSame(302, $response->getStatusCode());
+
+        // Old PDF should have been deleted
+        $this->assertFileDoesNotExist($tmpDir.'/public/uploads/devis/'.$oldPdfName);
+
+        @array_map('unlink', glob($tmpDir.'/public/uploads/devis/*'));
+        @rmdir($tmpDir.'/public/uploads/devis');
+        @rmdir($tmpDir.'/public/uploads');
+        @rmdir($tmpDir.'/public');
+        @rmdir($tmpDir);
+    }
+
+    public function testGeneratePdfWithExistingPdfNotOnDisk(): void
+    {
+        $on = new \App\Entity\OrderNumber('04/2026-00094');
+        $devis = new \App\Entity\Devis($on, 'secret');
+        $devis->setTotalHt('30.00');
+        $devis->setTotalTva('0.00');
+        $devis->setTotalTtc('30.00');
+        $devis->setUnsignedPdf('ghost-file.pdf'); // File doesn't exist on disk
+
+        $tmpDir = sys_get_temp_dir().'/devis_pdf_ghost_'.bin2hex(random_bytes(4));
+        mkdir($tmpDir.'/public/uploads/devis', 0777, true);
+
+        $repo = $this->createStub(\Doctrine\ORM\EntityRepository::class);
+        $repo->method('find')->willReturn($devis);
+        $em = $this->createMock(EntityManagerInterface::class);
+        $em->method('getRepository')->willReturn($repo);
+
+        $kernel = $this->createStub(\Symfony\Component\HttpKernel\KernelInterface::class);
+        $kernel->method('getProjectDir')->willReturn($tmpDir);
+
+        $controller = new DevisController(
+            $em,
+            $this->createStub(\App\Service\OrderNumberService::class),
+            $this->createStub(\App\Service\DevisService::class),
+            $this->createStub(\App\Service\MeilisearchService::class),
+        );
+
+        $session = new Session(new MockArraySessionStorage());
+        $stack = $this->createStub(RequestStack::class);
+        $stack->method('getSession')->willReturn($session);
+        $router = $this->createStub(RouterInterface::class);
+        $router->method('generate')->willReturn('/redirect');
+        $container = $this->createStub(ContainerInterface::class);
+        $container->method('has')->willReturnMap([
+            ['twig', true], ['router', true], ['security.authorization_checker', true],
+            ['security.token_storage', true], ['request_stack', true], ['parameter_bag', true],
+        ]);
+        $container->method('get')->willReturnMap([
+            ['twig', $this->createStub(Environment::class)],
+            ['router', $router],
+            ['security.authorization_checker', $this->createStub(AuthorizationCheckerInterface::class)],
+            ['security.token_storage', $this->createStub(TokenStorageInterface::class)],
+            ['request_stack', $stack],
+            ['parameter_bag', $this->createStub(ParameterBagInterface::class)],
+        ]);
+        $controller->setContainer($container);
+
+        $response = $controller->generatePdf(1, $kernel, $this->createStub(Environment::class));
+        $this->assertSame(302, $response->getStatusCode());
+
+        @array_map('unlink', glob($tmpDir.'/public/uploads/devis/*'));
+        @rmdir($tmpDir.'/public/uploads/devis');
+        @rmdir($tmpDir.'/public/uploads');
+        @rmdir($tmpDir.'/public');
+        @rmdir($tmpDir);
+    }
+
     // ── search ──
 
     public function testSearchEmptyQuery(): void