diff --git a/app/blueprints/auth/forms.py b/app/blueprints/auth/forms.py
index a6ce0017..a3dd14d1 100644
--- a/app/blueprints/auth/forms.py
+++ b/app/blueprints/auth/forms.py
@@ -60,7 +60,11 @@ class RegistrationForm(FlaskForm):
 
     def validate_username(self, field):
         if User.query.filter_by(username=field.data).first():
-            raise ValidationError('Username already in use')
+            raise ValidationError('Username already registered')
+
+    def validate_terms_of_use_accepted(self, field):
+        if not field.data:
+            raise ValidationError('Terms of Use not accepted')
 
 
 class LoginForm(FlaskForm):