diff --git a/python/samples/concepts/agents/chat_completion_agent/chat_completion_agent_truncate_history_reducer_agent_chat.py b/python/samples/concepts/agents/chat_completion_agent/chat_completion_agent_truncate_history_reducer_agent_chat.py
index 7ad573fa2590..3bfb3707df12 100644
--- a/python/samples/concepts/agents/chat_completion_agent/chat_completion_agent_truncate_history_reducer_agent_chat.py
+++ b/python/samples/concepts/agents/chat_completion_agent/chat_completion_agent_truncate_history_reducer_agent_chat.py
@@ -39,11 +39,11 @@ async def main():
     reducer_msg_count = 10
     reducer_threshold = 10
 
-    # Create a summarization reducer and clear its history
-    history_truncatation_reducer = ChatHistoryTruncationReducer(
+    # Create a truncation reducer and clear its history
+    history_truncation_reducer = ChatHistoryTruncationReducer(
         target_count=reducer_msg_count, threshold_count=reducer_threshold
     )
-    history_truncatation_reducer.clear()
+    history_truncation_reducer.clear()
 
     # Create our agent
     agent = ChatCompletionAgent(
@@ -53,7 +53,7 @@ async def main():
     )
 
     # Create a group chat using the reducer
-    chat = AgentGroupChat(chat_history=history_truncatation_reducer)
+    chat = AgentGroupChat(chat_history=history_truncation_reducer)
 
     # Simulate user messages
     message_count = 50  # Number of messages to simulate
@@ -65,7 +65,7 @@ async def main():
         # Attempt to reduce history
         is_reduced = await chat.reduce_history()
         if is_reduced:
-            print(f"@ History reduced to {len(history_truncatation_reducer.messages)} messages.")
+            print(f"@ History reduced to {len(history_truncation_reducer.messages)} messages.")
 
         # Invoke the agent and display responses
         async for message in chat.invoke(agent):
diff --git a/python/samples/concepts/agents/chat_completion_agent/chat_completion_agent_truncate_history_reducer_single_agent.py b/python/samples/concepts/agents/chat_completion_agent/chat_completion_agent_truncate_history_reducer_single_agent.py
index 897d2f9cf791..e6f8e4aca148 100644
--- a/python/samples/concepts/agents/chat_completion_agent/chat_completion_agent_truncate_history_reducer_single_agent.py
+++ b/python/samples/concepts/agents/chat_completion_agent/chat_completion_agent_truncate_history_reducer_single_agent.py
@@ -28,9 +28,10 @@ async def main():
     reducer_msg_count = 10
     reducer_threshold = 10
 
-    # Create a summarization reducer
+    # Create a truncation reducer
     history_truncation_reducer = ChatHistoryTruncationReducer(
-        service=AzureChatCompletion(), target_count=reducer_msg_count, threshold_count=reducer_threshold
+        target_count=reducer_msg_count,
+        threshold_count=reducer_threshold,
     )
 
     thread: ChatHistoryAgentThread = ChatHistoryAgentThread(chat_history=history_truncation_reducer)