diff --git a/app/controllers/ui/users_controller.rb b/app/controllers/ui/users_controller.rb
index 365618dc..09e4ee29 100644
--- a/app/controllers/ui/users_controller.rb
+++ b/app/controllers/ui/users_controller.rb
@@ -6,11 +6,21 @@ def index
     end
 
     def new
+      if current_user
+        flash[:alert] = I18n.t(:new_user_not_allowed_for_logged_in_users)
+        redirect_to ui_users_path
+        return
+      end
       @title = I18n.t(:new_user_title)
       @user = User.new
     end
 
     def create
+      if current_user
+        flash[:alert] = I18n.t(:new_user_not_allowed_for_logged_in_users)
+        redirect_to ui_users_path
+        return
+      end
       @user = User.new(params.require(:user).permit(
         :username,
         :email,
diff --git a/config/locales/views/users/en.yml b/config/locales/views/users/en.yml
index 98a5e7ee..335dfdf3 100644
--- a/config/locales/views/users/en.yml
+++ b/config/locales/views/users/en.yml
@@ -5,3 +5,4 @@ en:
   new_user_failure: "Some errors prevented us from creating your account. Please check below and try again!"
   new_user_login_heading: "Already have an account?"
   new_user_login_link: "Log in"
+  new_user_not_allowed_for_logged_in_users: "Sorry, logged in users can't create new accounts. Please log out and try again."