diff --git a/examples/client/asyncio/latency_client.py b/examples/client/asyncio/latency_client.py
index b977a3f..79d8f8f 100644
--- a/examples/client/asyncio/latency_client.py
+++ b/examples/client/asyncio/latency_client.py
@@ -20,7 +20,7 @@ async def connect():
 
 
 @sio.event
-async def pong_from_server(data):
+async def pong_from_server():
     global start_timer
     latency = time.time() - start_timer
     print('latency is {0:.2f} ms'.format(latency * 1000))
diff --git a/examples/client/threads/latency_client.py b/examples/client/threads/latency_client.py
index a934e48..d0a1cf2 100644
--- a/examples/client/threads/latency_client.py
+++ b/examples/client/threads/latency_client.py
@@ -1,7 +1,7 @@
 import time
 import socketio
 
-sio = socketio.Client()
+sio = socketio.Client(engineio_logger=True)
 start_timer = None
 
 
@@ -18,7 +18,7 @@ def connect():
 
 
 @sio.event
-def pong_from_server(data):
+def pong_from_server():
     global start_timer
     latency = time.time() - start_timer
     print('latency is {0:.2f} ms'.format(latency * 1000))