diff --git a/auth/auth.py b/auth/auth.py
index 21ca79748..b664198ca 100644
--- a/auth/auth.py
+++ b/auth/auth.py
@@ -187,7 +187,7 @@ def process_oauth(func):
       normalized = [part.strip() for part in auth.split(' ') if part]
       if normalized[0].lower() != 'bearer' or len(normalized) != 2:
         logger.debug('Invalid oauth bearer token format.')
-        return
+        return func(*args, **kwargs)
 
       token = normalized[1]
       _validate_and_apply_oauth_token(token)