diff --git a/samples/05.multi-turn-prompt/app.py b/samples/05.multi-turn-prompt/app.py
index 2a358711d..790c2019c 100644
--- a/samples/05.multi-turn-prompt/app.py
+++ b/samples/05.multi-turn-prompt/app.py
@@ -4,7 +4,6 @@
 import asyncio
 import sys
 from datetime import datetime
-from types import MethodType
 
 from flask import Flask, request, Response
 from botbuilder.core import (
@@ -59,7 +58,9 @@ async def on_error(context: TurnContext, error: Exception):
     # Clear out state
     await CONVERSATION_STATE.delete(context)
 
-ADAPTER.on_turn_error = MethodType(on_error, ADAPTER)
+# Set the error handler on the Adapter.
+# In this case, we want an unbound method, so MethodType is not needed.
+ADAPTER.on_turn_error = on_error
 
 # Create MemoryStorage, UserState and ConversationState
 MEMORY = MemoryStorage()
diff --git a/samples/06.using-cards/app.py b/samples/06.using-cards/app.py
index 611090cb6..fe0c69b56 100644
--- a/samples/06.using-cards/app.py
+++ b/samples/06.using-cards/app.py
@@ -7,7 +7,6 @@
 import asyncio
 import sys
 from datetime import datetime
-from types import MethodType
 
 from flask import Flask, request, Response
 from botbuilder.core import (
@@ -35,7 +34,7 @@
 
 
 # Catch-all for errors.
-async def on_error(self, context: TurnContext, error: Exception):
+async def on_error(context: TurnContext, error: Exception):
     # This check writes out errors to console log .vs. app insights.
     # NOTE: In production environment, you should consider logging this to Azure
     #       application insights.
@@ -61,7 +60,9 @@ async def on_error(self, context: TurnContext, error: Exception):
     # Clear out state
     await CONVERSATION_STATE.delete(context)
 
-ADAPTER.on_turn_error = MethodType(on_error, ADAPTER)
+# Set the error handler on the Adapter.
+# In this case, we want an unbound method, so MethodType is not needed.
+ADAPTER.on_turn_error = on_error
 
 # Create MemoryStorage, UserState and ConversationState
 MEMORY = MemoryStorage()
diff --git a/samples/21.corebot-app-insights/app.py b/samples/21.corebot-app-insights/app.py
index 9cc6896be..5011c21f9 100644
--- a/samples/21.corebot-app-insights/app.py
+++ b/samples/21.corebot-app-insights/app.py
@@ -14,7 +14,6 @@
 import asyncio
 import sys
 from datetime import datetime
-from types import MethodType
 
 from flask import Flask, request, Response
 from botbuilder.core import (
@@ -45,7 +44,7 @@
 
 
 # Catch-all for errors.
-async def on_error(self, context: TurnContext, error: Exception):
+async def on_error(context: TurnContext, error: Exception):
     # This check writes out errors to console log .vs. app insights.
     # NOTE: In production environment, you should consider logging this to Azure
     #       application insights.
@@ -69,10 +68,11 @@ async def on_error(self, context: TurnContext, error: Exception):
         await context.send_activity(trace_activity)
 
     # Clear out state
-    nonlocal self
     await CONVERSATION_STATE.delete(context)
 
-ADAPTER.on_turn_error = MethodType(on_error, ADAPTER)
+# Set the error handler on the Adapter.
+# In this case, we want an unbound method, so MethodType is not needed.
+ADAPTER.on_turn_error = on_error
 
 # Create MemoryStorage, UserState and ConversationState
 MEMORY = MemoryStorage()
diff --git a/samples/44.prompt-users-for-input/app.py b/samples/44.prompt-users-for-input/app.py
index 9e598f407..79b861b59 100644
--- a/samples/44.prompt-users-for-input/app.py
+++ b/samples/44.prompt-users-for-input/app.py
@@ -4,7 +4,6 @@
 import asyncio
 import sys
 from datetime import datetime
-from types import MethodType
 
 from flask import Flask, request, Response
 from botbuilder.core import (
@@ -31,7 +30,7 @@
 
 
 # Catch-all for errors.
-async def on_error(self, context: TurnContext, error: Exception):
+async def on_error(context: TurnContext, error: Exception):
     # This check writes out errors to console log .vs. app insights.
     # NOTE: In production environment, you should consider logging this to Azure
     #       application insights.
@@ -57,7 +56,9 @@ async def on_error(self, context: TurnContext, error: Exception):
     # Clear out state
     await CONVERSATION_STATE.delete(context)
 
-ADAPTER.on_turn_error = MethodType(on_error, ADAPTER)
+# Set the error handler on the Adapter.
+# In this case, we want an unbound method, so MethodType is not needed.
+ADAPTER.on_turn_error = on_error
 
 # Create MemoryStorage and state
 MEMORY = MemoryStorage()
diff --git a/samples/45.state-management/app.py b/samples/45.state-management/app.py
index 1268ffcd2..4609c2881 100644
--- a/samples/45.state-management/app.py
+++ b/samples/45.state-management/app.py
@@ -4,7 +4,6 @@
 import asyncio
 import sys
 from datetime import datetime
-from types import MethodType
 
 from flask import Flask, request, Response
 from botbuilder.core import (
@@ -31,7 +30,7 @@
 
 
 # Catch-all for errors.
-async def on_error(self, context: TurnContext, error: Exception):
+async def on_error(context: TurnContext, error: Exception):
     # This check writes out errors to console log .vs. app insights.
     # NOTE: In production environment, you should consider logging this to Azure
     #       application insights.
@@ -57,7 +56,9 @@ async def on_error(self, context: TurnContext, error: Exception):
     # Clear out state
     await CONVERSATION_STATE.delete(context)
 
-ADAPTER.on_turn_error = MethodType(on_error, ADAPTER)
+# Set the error handler on the Adapter.
+# In this case, we want an unbound method, so MethodType is not needed.
+ADAPTER.on_turn_error = on_error
 
 # Create MemoryStorage and state
 MEMORY = MemoryStorage()