diff --git a/oras/auth/token.py b/oras/auth/token.py
index 3a73b47..0e47b26 100644
--- a/oras/auth/token.py
+++ b/oras/auth/token.py
@@ -48,7 +48,7 @@ def authenticate_request(
         original: requests.Response,
         headers: dict,
         refresh=False,
-        skipAnonToken=False,
+        skip_anon_token=False,
     ):
         """
         Authenticate Request
@@ -77,7 +77,7 @@ def authenticate_request(
         h = auth_utils.parse_auth_header(authHeaderRaw)
 
         # First try to request an anonymous token
-        if not skipAnonToken:
+        if not skip_anon_token:
             logger.debug("No Authorization, requesting anonymous token")
             anon_token = self.request_anonymous_token(h)
             if anon_token: