diff --git a/discord/client.py b/discord/client.py
index 2f41953c8..00ed7a343 100644
--- a/discord/client.py
+++ b/discord/client.py
@@ -137,6 +137,7 @@ if TYPE_CHECKING:
         allowed_mentions: AllowedMentions
         heartbeat_timeout: float
         guild_ready_timeout: float
+        assume_unsync_clock: bool
         enable_debug_events: bool
         enable_raw_presences: bool
         http_trace: aiohttp.TraceConfig
@@ -242,7 +243,17 @@ class Client:
         The maximum number of seconds to wait for the GUILD_CREATE stream to end before
         preparing the member cache and firing READY. The default timeout is 2 seconds.
 
+        .. versionadded:: 1.4
+    assume_unsync_clock: :class:`bool`
+        Whether to assume the system clock is unsynced. This applies to the ratelimit handling
+        code. If this is set to ``True``, the default, then the library uses the time to reset
+        a rate limit bucket given by Discord. If this is ``False`` then your system clock is
+        used to calculate how long to sleep for. If this is set to ``False`` it is recommended to
+        sync your system clock to Google's NTP server.
+
         .. versionadded:: 1.3
+        .. deprecated:: 2.7
+            This parameter is deprecated and will be removed in a future version as it is unused.
     enable_debug_events: :class:`bool`
         Whether to enable events that are useful only for debugging gateway related information.
 
@@ -297,6 +308,7 @@ class Client:
         connector: Optional[aiohttp.BaseConnector] = options.get('connector', None)
         proxy: Optional[str] = options.pop('proxy', None)
         proxy_auth: Optional[aiohttp.BasicAuth] = options.pop('proxy_auth', None)
+        unsync_clock: bool = options.pop('assume_unsync_clock', True)
         http_trace: Optional[aiohttp.TraceConfig] = options.pop('http_trace', None)
         max_ratelimit_timeout: Optional[float] = options.pop('max_ratelimit_timeout', None)
         self.http: HTTPClient = HTTPClient(