Ambiguous match error for Cucumber

Hi,
I am trying out the cucumber tutorial

http://www.ultrasaurus.com/sarahblog/2008/12/rails-2-day-3-behavior-driven-development/

My tasklist.feature file is like as follows
"
Feature: Tasks
In order to keep track of tasks
People should be able to
Create a list of tasks

Scenario: List Tasks
Given that I have created a task "task 1"
When I go to the tasks page
Then I should see "task 1"
"

My tasklist_steps.rb file is as follows:-
"
Given /^that I have created a task "(.*)"$/ do |desc|
  Task.create!(:description => desc)
end

When /^I go to the tasks page$/ do
  visit "/tasks"
end
"

Whenever I am doing "rake cucumber:all" I am getting following error:-
".F-

(::slight_smile: failed steps (::slight_smile:

Ambiguous match of "I go to the tasks page":

features/step_definitions/tasklist_steps.rb:5:in `/^I go to the tasks
page$/'
features/step_definitions/web_steps.rb:19:in `/^(?:|I )go to (.+)$/'

You can run again with --guess to make Cucumber be more smart about it
(Cucumber::Ambiguous)
features/tasklist.feature:8:in `When I go to the tasks page'

Failing Scenarios:
cucumber features/tasklist.feature:6 # Scenario: List Tasks

1 scenario (1 failed)
3 steps (1 failed, 1 skipped, 1 passed)
0m0.063s
rake aborted!
Command failed with status (1): [/usr/local/ruby2/bin/ruby -I
"/usr/local/r...]

(See full trace by running task with --trace)
"

Can anyone tell me what is the wrong with my test code?

Thanks,
Mike

You have defined step in the tasklist_steps.rb and same step is
already defined in web_steps.rb during:
rails cucumber:install