diff --git a/codeception/codeception/2.3/post-install.txt b/codeception/codeception/2.3/post-install.txt
index d7e828fb..7f76b8fe 100644
--- a/codeception/codeception/2.3/post-install.txt
+++ b/codeception/codeception/2.3/post-install.txt
@@ -1,15 +1,15 @@
 <fg=white;bg=magenta> Bootstrapping Codeception </fg=white;bg=magenta>
-File codeception.yaml created       <- global configuration
+File codeception.yml created        <- global configuration
 tests/unit created                  <- unit tests
-tests/unit.suite.yaml written       <- unit tests suite configuration
+tests/unit.suite.yml written        <- unit tests suite configuration
 tests/functional created            <- functional tests
-tests/functional.suite.yaml written <- functional tests suite configuration
+tests/functional.suite.yml written  <- functional tests suite configuration
 tests/acceptance created            <- acceptance tests
-tests/acceptance.suite.yaml written <- acceptance tests suite configuration
+tests/acceptance.suite.yml written  <- acceptance tests suite configuration
 <info>Codeception is installed for acceptance, functional, and unit testing</info>
 <options=bold>Next steps:</options=bold>
-1. Edit <options=bold>tests/acceptance.suite.yaml</options=bold> to set url of your application. Change PhpBrowser to WebDriver to enable browser testing
-2. Edit <options=bold>tests/functional.suite.yaml</options=bold> to enable a Doctrine module if needs.
-3. Create your first acceptance tests using <comment>vendor/bin/codecept g:cest acceptance First</comment>
-4. Write first test in <options=bold>tests/acceptance/FirstCest.php</options=bold>
+1. Edit <options=bold>tests/acceptance.suite.yml</options=bold> to set the url of your application. Change PhpBrowser to WebDriver to enable browser testing.
+2. Edit <options=bold>tests/functional.suite.yml</options=bold> to enable Doctrine module if needed.
+3. Create your first acceptance test using <comment>vendor/bin/codecept g:cest acceptance First</comment>
+4. Write your first test in <options=bold>tests/acceptance/FirstCest.php</options=bold>
 5. Run tests using: <comment>vendor/bin/codecept run</comment>