diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ca67e273f..b80f2722f5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -48,6 +48,8 @@ These changes are available on the `master` branch, but have not yet been releas
   ([#3061](https://github.com/Pycord-Development/pycord/pull/3061))
 - Fixed the update of a user's `primary_guild` to now cause an `on_user_update` event to
   fire. ([#3077](https://github.com/Pycord-Development/pycord/pull/3077))
+- Fixed an error when using methods from other classes regarding option autocompletes.
+  ([#3082](https://github.com/Pycord-Development/pycord/pull/3082))
 
 ### Removed
 
diff --git a/discord/commands/core.py b/discord/commands/core.py
index a184a6fcae..499e326a61 100644
--- a/discord/commands/core.py
+++ b/discord/commands/core.py
@@ -1121,7 +1121,7 @@ async def invoke_autocomplete_callback(self, ctx: AutocompleteContext):
                 ctx.value = op.get("value")
                 ctx.options = values
 
-                if option.autocomplete._is_instance_method:
+                if option._autocomplete_is_instance_method:
                     instance = getattr(option.autocomplete, "__self__", ctx.cog)
                     result = option.autocomplete(instance, ctx)
                 else:
diff --git a/discord/commands/options.py b/discord/commands/options.py
index 1613630bc0..e62d81d80a 100644
--- a/discord/commands/options.py
+++ b/discord/commands/options.py
@@ -307,6 +307,7 @@ def __init__(
         self.default = kwargs.pop("default", None)
 
         self._autocomplete: AutocompleteFunction | None = None
+        self._autocomplete_is_instance_method: bool = False
         self.autocomplete = kwargs.pop("autocomplete", None)
         if len(enum_choices) > 25:
             self.choices: list[OptionChoice] = []
@@ -483,13 +484,13 @@ def autocomplete(self, value: AutocompleteFunction | None) -> None:
         self._autocomplete = value
         # this is done here so it does not have to be computed every time the autocomplete is invoked
         if self._autocomplete is not None:
-            self._autocomplete._is_instance_method = (  # pyright: ignore [reportFunctionMemberAccess]
+            self._autocomplete_is_instance_method = (
                 sum(
                     1
                     for param in inspect.signature(
                         self._autocomplete
                     ).parameters.values()
-                    if param.default == param.empty  # pyright: ignore[reportAny]
+                    if param.default == param.empty
                     and param.kind not in (param.VAR_POSITIONAL, param.VAR_KEYWORD)
                 )
                 == 2