diff --git a/telethon/sync.py b/telethon/sync.py
index 5395f8ad..15bc5859 100644
--- a/telethon/sync.py
+++ b/telethon/sync.py
@@ -18,7 +18,7 @@ from async_generator import isasyncgenfunction
 
 from .client.telegramclient import TelegramClient
 from .tl.custom import (
-    Draft, Dialog, MessageButton, Forward, Message, InlineResult
+    Draft, Dialog, MessageButton, Forward, Message, InlineResult, Conversation
 )
 from .tl.custom.chatgetter import ChatGetter
 from .tl.custom.sendergetter import SenderGetter
@@ -83,4 +83,4 @@ def syncify(*types):
 
 
 syncify(TelegramClient, Draft, Dialog, MessageButton,
-        ChatGetter, SenderGetter, Forward, Message, InlineResult)
+        ChatGetter, SenderGetter, Forward, Message, InlineResult, Conversation)
diff --git a/telethon/tl/custom/conversation.py b/telethon/tl/custom/conversation.py
index d1e8cdbb..eb9f9b85 100644
--- a/telethon/tl/custom/conversation.py
+++ b/telethon/tl/custom/conversation.py
@@ -420,6 +420,9 @@ class Conversation(ChatGetter):
         except asyncio.CancelledError:
             pass
 
+    def __enter__(self):
+        return self._client.loop.run_until_complete(self.__aenter__())
+
     async def __aenter__(self):
         self._client._conversations[self._id] = self
         self._input_chat = \
@@ -439,5 +442,8 @@ class Conversation(ChatGetter):
 
         return self
 
+    def __exit__(self, *args):
+        return self._client.loop.run_until_complete(self.__aexit__(*args))
+
     async def __aexit__(self, *args):
         del self._client._conversations[self._id]