diff --git a/discord/utils.py b/discord/utils.py
index 98108a0bb..044b2c61d 100644
--- a/discord/utils.py
+++ b/discord/utils.py
@@ -267,7 +267,7 @@ def oauth_url(
     redirect_uri: str = MISSING,
     scopes: Iterable[str] = MISSING,
     disable_guild_select: bool = False,
-):
+) -> str:
     """A helper function that returns the OAuth2 URL for inviting the bot
     into guilds.