diff --git a/taiga/auth/api.py b/taiga/auth/api.py
index 5d14d18f..df077b52 100644
--- a/taiga/auth/api.py
+++ b/taiga/auth/api.py
@@ -22,15 +22,16 @@ from enum import Enum
 from django.utils.translation import ugettext as _
 from django.conf import settings
 
+from taiga.base.api import validators
 from taiga.base.api import serializers
 from taiga.base.api import viewsets
 from taiga.base.decorators import list_route
 from taiga.base import exceptions as exc
 from taiga.base import response
 
-from .serializers import PublicRegisterSerializer
-from .serializers import PrivateRegisterForExistingUserSerializer
-from .serializers import PrivateRegisterForNewUserSerializer
+from .validators import PublicRegisterValidator
+from .validators import PrivateRegisterForExistingUserValidator
+from .validators import PrivateRegisterForNewUserValidator
 
 from .services import private_register_for_existing_user
 from .services import private_register_for_new_user
@@ -44,7 +45,7 @@ from .permissions import AuthPermission
 def _parse_data(data:dict, *, cls):
     """
     Generic function for parse user data using
-    specified serializer on `cls` keyword parameter.
+    specified validator on `cls` keyword parameter.
 
     Raises: RequestValidationError exception if
     some errors found when data is validated.
@@ -52,21 +53,21 @@ def _parse_data(data:dict, *, cls):
     Returns the parsed data.
     """
 
-    serializer = cls(data=data)
-    if not serializer.is_valid():
-        raise exc.RequestValidationError(serializer.errors)
-    return serializer.data
+    validator = cls(data=data)
+    if not validator.is_valid():
+        raise exc.RequestValidationError(validator.errors)
+    return validator.data
 
 # Parse public register data
-parse_public_register_data = partial(_parse_data, cls=PublicRegisterSerializer)
+parse_public_register_data = partial(_parse_data, cls=PublicRegisterValidator)
 
 # Parse private register data for existing user
 parse_private_register_for_existing_user_data = \
-    partial(_parse_data, cls=PrivateRegisterForExistingUserSerializer)
+    partial(_parse_data, cls=PrivateRegisterForExistingUserValidator)
 
 # Parse private register data for new user
 parse_private_register_for_new_user_data = \
-    partial(_parse_data, cls=PrivateRegisterForNewUserSerializer)
+    partial(_parse_data, cls=PrivateRegisterForNewUserValidator)
 
 
 class RegisterTypeEnum(Enum):
@@ -81,10 +82,10 @@ def parse_register_type(userdata:dict) -> str:
     """
     # Create adhoc inner serializer for avoid parse
     # manually the user data.
-    class _serializer(serializers.Serializer):
+    class _validator(validators.Validator):
         existing = serializers.BooleanField()
 
-    instance = _serializer(data=userdata)
+    instance = _validator(data=userdata)
     if not instance.is_valid():
         raise exc.RequestValidationError(instance.errors)
 
diff --git a/taiga/auth/serializers.py b/taiga/auth/validators.py
similarity index 81%
rename from taiga/auth/serializers.py
rename to taiga/auth/validators.py
index 8e8df4e2..6c3661ed 100644
--- a/taiga/auth/serializers.py
+++ b/taiga/auth/validators.py
@@ -16,16 +16,17 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from django.core import validators
+from django.core import validators as core_validators
 from django.core.exceptions import ValidationError
 from django.utils.translation import ugettext as _
 
 from taiga.base.api import serializers
+from taiga.base.api import validators
 
 import re
 
 
-class BaseRegisterSerializer(serializers.Serializer):
+class BaseRegisterValidator(validators.Validator):
     full_name = serializers.CharField(max_length=256)
     email = serializers.EmailField(max_length=255)
     username = serializers.CharField(max_length=255)
@@ -33,7 +34,7 @@ class BaseRegisterSerializer(serializers.Serializer):
 
     def validate_username(self, attrs, source):
         value = attrs[source]
-        validator = validators.RegexValidator(re.compile('^[\w.-]+$'), _("invalid username"), "invalid")
+        validator = core_validators.RegexValidator(re.compile('^[\w.-]+$'), _("invalid username"), "invalid")
 
         try:
             validator(value)
@@ -43,15 +44,15 @@ class BaseRegisterSerializer(serializers.Serializer):
         return attrs
 
 
-class PublicRegisterSerializer(BaseRegisterSerializer):
+class PublicRegisterValidator(BaseRegisterValidator):
     pass
 
 
-class PrivateRegisterForNewUserSerializer(BaseRegisterSerializer):
+class PrivateRegisterForNewUserValidator(BaseRegisterValidator):
     token = serializers.CharField(max_length=255, required=True)
 
 
-class PrivateRegisterForExistingUserSerializer(serializers.Serializer):
+class PrivateRegisterForExistingUserValidator(validators.Validator):
     username = serializers.CharField(max_length=255)
     password = serializers.CharField(min_length=4)
     token = serializers.CharField(max_length=255, required=True)