diff --git a/src/Symfony/Bundle/Test/ApiTestCase.php b/src/Symfony/Bundle/Test/ApiTestCase.php
index cfb576cde8e..af7aa5eaddc 100644
--- a/src/Symfony/Bundle/Test/ApiTestCase.php
+++ b/src/Symfony/Bundle/Test/ApiTestCase.php
@@ -36,7 +36,11 @@ abstract class ApiTestCase extends KernelTestCase
      */
     protected static function createClient(array $kernelOptions = [], array $defaultOptions = []): Client
     {
-        if (!static::$booted) {
+        if (null === ($alwaysBootKernel = $kernelOptions['alwaysBootKernel'] ?? static::alwaysBootKernel())) {
+            trigger_deprecation('api-platform/symfony', '5.0', \sprintf('We will not boot the kernel if it is booted already. Define the kernelOptions "alwaysBootKernel" or override "%s::alwaysBootKernel" to return "true" if you want to keep the old behavior.', static::class));
+        }
+
+        if ($alwaysBootKernel ? true : !static::$booted) {
             static::bootKernel($kernelOptions);
         }
 
@@ -99,4 +103,12 @@ protected function getIriFromResource(object $resource): ?string
 
         return $iriConverter->getIriFromResource($resource);
     }
+
+    /**
+     * When using Alice we recommend to use "true"
+     */
+    protected static function alwaysBootKernel(): ?bool
+    {
+        return null;
+    }
 }
diff --git a/tests/Symfony/Bundle/Test/ApiTestCaseTest.php b/tests/Symfony/Bundle/Test/ApiTestCaseTest.php
index 752f41e0ead..2f39d5b11ed 100644
--- a/tests/Symfony/Bundle/Test/ApiTestCaseTest.php
+++ b/tests/Symfony/Bundle/Test/ApiTestCaseTest.php
@@ -401,6 +401,11 @@ public function testDoNotRebootKernelOnCreateClient(): void
 
         self::$kernel = $mock;
 
-        self::createClient();
+        self::createClient(['checkContainerIsBooted' => true]);
+    }
+
+    protected static function checkContainerIsBooted(): ?bool
+    {
+        return false;
     }
 }
diff --git a/tests/Symfony/Bundle/Test/ClientTest.php b/tests/Symfony/Bundle/Test/ClientTest.php
index 25e0466ce4c..0a39f984ae8 100644
--- a/tests/Symfony/Bundle/Test/ClientTest.php
+++ b/tests/Symfony/Bundle/Test/ClientTest.php
@@ -170,4 +170,9 @@ public function testLoginUser(): void
         $client->request('GET', '/secured_dummies');
         $this->assertResponseIsSuccessful();
     }
+
+    protected static function checkContainerIsBooted(): ?bool
+    {
+        return true;
+    }
 }