diff --git a/tests/Tracing/HttpClient/TraceableHttpClientTest.php b/tests/Tracing/HttpClient/TraceableHttpClientTest.php
index 7b8f69d1..d9abbd24 100644
--- a/tests/Tracing/HttpClient/TraceableHttpClientTest.php
+++ b/tests/Tracing/HttpClient/TraceableHttpClientTest.php
@@ -46,7 +46,7 @@ final class TraceableHttpClientTest extends TestCase
 
     public static function setUpBeforeClass(): void
     {
-        if (!self::isHttpClientPackageInstalled()) {
+        if (!interface_exists(HttpClientInterface::class)) {
             self::markTestSkipped('This test requires the "symfony/http-client" Composer package to be installed.');
         }
     }
@@ -357,13 +357,10 @@ public function testWithOptions(): void
         $this->assertSame('GET', $response->getInfo('http_method'));
         $this->assertSame('https://www.example.org/test-page', $response->getInfo('url'));
     }
+}
 
-    private static function isHttpClientPackageInstalled(): bool
+if (interface_exists(HttpClientInterface::class)) {
+    interface TestableHttpClientInterface extends HttpClientInterface, LoggerAwareInterface, ResetInterface
     {
-        return interface_exists(HttpClientInterface::class);
     }
 }
-
-interface TestableHttpClientInterface extends HttpClientInterface, LoggerAwareInterface, ResetInterface
-{
-}
diff --git a/tests/Tracing/HttpClient/TraceableResponseTest.php b/tests/Tracing/HttpClient/TraceableResponseTest.php
index e67616d5..96668458 100644
--- a/tests/Tracing/HttpClient/TraceableResponseTest.php
+++ b/tests/Tracing/HttpClient/TraceableResponseTest.php
@@ -28,6 +28,13 @@ final class TraceableResponseTest extends TestCase
      */
     private $hub;
 
+    public static function setUpBeforeClass(): void
+    {
+        if (!interface_exists(HttpClientInterface::class)) {
+            self::markTestSkipped('This test requires the "symfony/http-client" Composer package to be installed.');
+        }
+    }
+
     protected function setUp(): void
     {
         $this->client = $this->createMock(HttpClientInterface::class);