diff --git a/server/netty-server/cats/src/test/scala/sttp/tapir/server/netty/cats/NettyCatsServerTest.scala b/server/netty-server/cats/src/test/scala/sttp/tapir/server/netty/cats/NettyCatsServerTest.scala
index e8e36e90a5..73053ed362 100644
--- a/server/netty-server/cats/src/test/scala/sttp/tapir/server/netty/cats/NettyCatsServerTest.scala
+++ b/server/netty-server/cats/src/test/scala/sttp/tapir/server/netty/cats/NettyCatsServerTest.scala
@@ -24,7 +24,9 @@ class NettyCatsServerTest extends TestSuite with EitherValues {
 
           val interpreter = new NettyCatsTestServerInterpreter(eventLoopGroup, dispatcher)
           val createServerTest = new DefaultCreateServerTest(backend, interpreter)
-          val ioSleeper: Sleeper[IO] = (duration: FiniteDuration) => IO.sleep(duration)
+          val ioSleeper: Sleeper[IO] = new Sleeper[IO] {
+            override def sleep(duration: FiniteDuration): IO[Unit] = IO.sleep(duration)
+          }
           def drainFs2(stream: Fs2Streams[IO]#BinaryStream): IO[Unit] =
             stream.compile.drain.void
 
@@ -48,8 +50,7 @@ class NettyCatsServerTest extends TestSuite with EitherValues {
             ) {
               override def functionToPipe[A, B](f: A => B): streams.Pipe[A, B] = in => in.map(f)
               override def emptyPipe[A, B]: fs2.Pipe[IO, A, B] = _ => fs2.Stream.empty
-            }
-              .tests()
+            }.tests()
 
           IO.pure((tests, eventLoopGroup))
         } { case (_, eventLoopGroup) =>
@@ -57,6 +58,4 @@ class NettyCatsServerTest extends TestSuite with EitherValues {
         }
         .map { case (tests, _) => tests }
     }
-
-  override def testNameFilter: Option[String] = Some("chunked transmission lasts longer than given timeout")
 }