diff --git a/rest_framework/validators.py b/rest_framework/validators.py
index 2f3aadef9..e5acb598e 100644
--- a/rest_framework/validators.py
+++ b/rest_framework/validators.py
@@ -40,6 +40,9 @@ class PasswordValidator:
 
     Should be applied to an individual field on the serializer.
 
+    If you use this class at serializers' field validators, UserAttributeSimilarityValidator won't affect
+        You can use validate_FOO() and pass user to PasswordValidator.
+
     If the password is valid, return ``None``.
     """