diff --git a/app/auth/forms.py b/app/auth/forms.py
index 86e1eed2..fe3f168c 100644
--- a/app/auth/forms.py
+++ b/app/auth/forms.py
@@ -44,6 +44,9 @@ class RegistrationForm(FlaskForm):
         if not password.data:
             return
 
+        if password.data == 'password' or password.data == '12345678' or password.data == '1234567890':
+            raise ValidationError(_l('This password is too common.'))
+
         first_char = password.data[0]    # the first character in the string
 
         all_the_same = True