diff --git a/users/models.py b/users/models.py
index 562ede9..bb861da 100644
--- a/users/models.py
+++ b/users/models.py
@@ -9,7 +9,7 @@ from django.contrib.contenttypes.models import ContentType
 import datetime
 
 # UNIQUE and NO BLANK fields while user-registration
-User._meta.get_field('email')._unique = False
+User._meta.get_field('email')._unique = True
 User._meta.get_field('email').blank = False
 User._meta.get_field('first_name').blank = False
 User._meta.get_field('last_name').blank = False