diff --git a/test/transport/test_comm.py b/test/transport/test_comm.py
index 2639b3b993..30844425e7 100644
--- a/test/transport/test_comm.py
+++ b/test/transport/test_comm.py
@@ -172,12 +172,9 @@ async def test_split_serial_packet(self, client, server, use_port):
             (CommType.SERIAL, "socket://localhost:7300"),
         ],
     )
+    @pytest.mark.skipif(SerialTransport.force_poll, reason="Serial poll not supported")
     async def test_serial_poll(self, client, server, use_port):
         """Test connection and data exchange."""
-        if SerialTransport.force_poll:  # pragma: no cover
-            client.close()
-            server.close()
-            return
         Log.debug("test_serial_poll {}", use_port)
         assert await server.listen()
         SerialTransport.force_poll = True
diff --git a/test/transport/test_serial.py b/test/transport/test_serial.py
index 0d7e7497d9..acf73c9cdc 100644
--- a/test/transport/test_serial.py
+++ b/test/transport/test_serial.py
@@ -80,10 +80,9 @@ async def test_create_serial(self):
         assert protocol
         transport.close()
 
+    @pytest.mark.skipif(SerialTransport.force_poll, reason="Serial poll not supported")
     async def test_force_poll(self):
         """Test external methods."""
-        if SerialTransport.force_poll:  # pragma: no cover
-            return
         SerialTransport.force_poll = True
         transport, protocol = await create_serial_connection(
             asyncio.get_running_loop(), mock.Mock, "dummy"
@@ -94,10 +93,9 @@ async def test_force_poll(self):
         transport.close()
         SerialTransport.force_poll = False
 
+    @pytest.mark.skipif(SerialTransport.force_poll, reason="Serial poll not supported")
     async def test_write_force_poll(self):
         """Test write with poll."""
-        if SerialTransport.force_poll:  # pragma: no cover
-            return
         SerialTransport.force_poll = True
         transport, protocol = await create_serial_connection(
             asyncio.get_running_loop(), mock.Mock, "dummy"