diff --git a/drf_uuid_auth/authentication.py b/drf_uuid_auth/authentication.py
index 3c315ef..3d7b13d 100644
--- a/drf_uuid_auth/authentication.py
+++ b/drf_uuid_auth/authentication.py
@@ -38,4 +38,4 @@ class UuidAuthentication(BaseAuthentication):
         return user
 
     def authenticate_header(self, request):
-        pass
+        return ""