diff --git a/telethon/client/updates.py b/telethon/client/updates.py
index 00f43e38..a9d5c9aa 100644
--- a/telethon/client/updates.py
+++ b/telethon/client/updates.py
@@ -295,7 +295,10 @@ class UpdateMethods(UserMethods):
             # We could add a lock to not fetch the same pts twice if we are
             # already fetching it. However this does not happen in practice,
             # which makes sense, because different updates have different pts.
-            await self._get_difference(update, channel_id, pts_date)
+            if self._state_cache.update(update, check_only=True):
+                # If the update doesn't have pts, fetching won't do anything.
+                # For example, UpdateUserStatus or UpdateChatUserTyping.
+                await self._get_difference(update, channel_id, pts_date)
 
         built = EventBuilderDict(self, update)
         if self._conversations:
diff --git a/telethon/statecache.py b/telethon/statecache.py
index ea3214ba..6125d101 100644
--- a/telethon/statecache.py
+++ b/telethon/statecache.py
@@ -87,12 +87,16 @@ class StateCache:
                 types.updates.ChannelDifferenceEmpty,
                 types.updates.ChannelDifferenceTooLong,
                 types.updates.ChannelDifference
-            ))
+            )),
+            check_only=False
     ):
         """
         Update the state with the given update.
         """
         cid = update.CONSTRUCTOR_ID
+        if check_only:
+            return cid in has_pts or cid in has_date or cid in has_channel_pts
+
         if cid in has_pts:
             if cid in has_date:
                 self._pts_date = update.pts, update.date