diff --git a/django/contrib/auth/models.py b/django/contrib/auth/models.py
index 5709d25d7f..798cc805a0 100644
--- a/django/contrib/auth/models.py
+++ b/django/contrib/auth/models.py
@@ -177,7 +177,7 @@ class UserManager(BaseUserManager):
         now = timezone.now()
         if not username:
             raise ValueError('The given username must be set')
-        email = UserManager.normalize_email(email)
+        email = self.normalize_email(email)
         user = self.model(username=username, email=email,
                           is_staff=False, is_active=True, is_superuser=False,
                           last_login=now, date_joined=now, **extra_fields)
diff --git a/django/contrib/auth/tests/test_custom_user.py b/django/contrib/auth/tests/test_custom_user.py
index 0d324f0953..a3a159880a 100644
--- a/django/contrib/auth/tests/test_custom_user.py
+++ b/django/contrib/auth/tests/test_custom_user.py
@@ -21,7 +21,7 @@ class CustomUserManager(BaseUserManager):
             raise ValueError('Users must have an email address')
 
         user = self.model(
-            email=CustomUserManager.normalize_email(email),
+            email=self.normalize_email(email),
             date_of_birth=date_of_birth,
         )
 
diff --git a/docs/topics/auth/customizing.txt b/docs/topics/auth/customizing.txt
index 9a8bab947c..bc021b14ad 100644
--- a/docs/topics/auth/customizing.txt
+++ b/docs/topics/auth/customizing.txt
@@ -939,7 +939,7 @@ authentication app::
                 raise ValueError('Users must have an email address')
 
             user = self.model(
-                email=MyUserManager.normalize_email(email),
+                email=self.normalize_email(email),
                 date_of_birth=date_of_birth,
             )