discord/ext/commands/core.py

@@ -1226,7 +1226,7 @@ class Command(_BaseCommand, Generic[CogT, P, T]):
             ctx.command = original
 
     def _param_to_options(
-        self, name: str, annotation: Any, required: bool, varadic: bool, description=None
+        self, name: str, annotation: Any, required: bool, varadic: bool, description: Optional[str] = None
     ) -> List[Optional[ApplicationCommandInteractionDataOption]]:
 
         if description is not None:

discord/ext/commands/flags.py

@@ -98,8 +98,8 @@ class Flag:
         Whether multiple given values overrides the previous value.
     """
 
-    name: str = MISSING,
-    description: str = MISSING,
+    name: str = MISSING
+    description: str = MISSING
     aliases: List[str] = field(default_factory=list)
     attribute: str = MISSING
     annotation: Any = MISSING