diff --git a/app/controllers/todos_controller.rb b/app/controllers/todos_controller.rb
index b668a308..c64441f7 100644
--- a/app/controllers/todos_controller.rb
+++ b/app/controllers/todos_controller.rb
@@ -83,7 +83,7 @@ class TodosController < ApplicationController
       unless @todo.uncompleted_predecessors.empty? || @todo.state == 'project_hidden'
         @todo.state = 'pending'
       end
-      @todo.save!
+      @todo.save
     end
 
     respond_to do |format|