diff --git a/app/models.py b/app/models.py
index 9471d85..8904680 100644
--- a/app/models.py
+++ b/app/models.py
@@ -134,7 +134,7 @@ class User(db.Model):
             user_info = User.query.filter(User.username == self.username).first()
 
             if user_info:
-                if self.check_password(user_info.password):
+                if user_info.password and self.check_password(user_info.password):
                     logging.info('User "%s" logged in successfully' % self.username)
                     return True
                 else: