diff --git a/app/routes/users.py b/app/routes/users.py
index 53c6b37..84930f5 100644
--- a/app/routes/users.py
+++ b/app/routes/users.py
@@ -170,6 +170,8 @@ def log_out():
 @redirect_if_logged_in()
 def sign_up():
     key = request.args.get('key', '')
+    invite = None
+    inviter = None
     if not key and current_app.config['DISABLE_SIGNUP']:
         return redirect(url_for('topics.all_topics'))
     elif key and current_app.config['DISABLE_SIGNUP']:
@@ -188,6 +190,7 @@ def sign_up_post():
     invalid_username_error_page = redirect(url_for('.sign_up', error='This username cannot be used. Please pick another.', **args_sans_error))
     passwords_error_page = redirect(url_for('.sign_up', error='The passwords do not match.', **args_sans_error))
     username = request.form.get('username', default='')
+    invite = None
     if current_app.config['DISABLE_SIGNUP']:
         key = request.form.get('key', '')
         if not key:
@@ -254,6 +257,8 @@ def user_page(username):
         abort(404)
     if current_app.config['DISABLE_SIGNUP'] and target_user.invited_by:
         invited_by = Users.find({'id': target_user.invited_by})
+    else:
+        invited_by = None
     return render_template('users/user_page.html', target_user=target_user, invited_by=invited_by)
 
 @bp.get('/<username>/posts/')
@@ -276,7 +281,7 @@ def posts(username):
     return render_template(
         'users/posts.html', posts=posts,
         page=page, page_count=page_count,
-        target_user=target_user, Reactions=Reactions
+        target_user=target_user,
         )
 
 @bp.get('/<username>/threads/')
@@ -299,7 +304,7 @@ def threads(username):
     return render_template(
         'users/threads.html', threads=threads,
         page=page, page_count=page_count,
-        target_user=target_user, Reactions=Reactions
+        target_user=target_user,
         )
 
 @bp.get('/<username>/comments/')
@@ -442,7 +447,6 @@ def set_personalization(username):
                 parsed_content = babycode_to_html(rev.original_markup).result
                 rev.update({'content': parsed_content})
 
-
     flash('Personalization settings updated.', InfoboxKind.INFO)
     return redirect(url_for('.settings', username=username))