diff --git a/src/SilverStripe/BehatExtension/Compiler/CoreInitializationPass.php b/src/SilverStripe/BehatExtension/Compiler/CoreInitializationPass.php
index fd754fc..f3da535 100644
--- a/src/SilverStripe/BehatExtension/Compiler/CoreInitializationPass.php
+++ b/src/SilverStripe/BehatExtension/Compiler/CoreInitializationPass.php
@@ -22,7 +22,11 @@ class CoreInitializationPass implements CompilerPassInterface
         $_GET['flush'] = 1;
         require_once('Core/Core.php');
 
-        SapphireTest::use_test_manifest();
+        // Include bootstrap file
+        $bootstrapFile = $container->getParameter('behat.silverstripe_extension.bootstrap_file');
+        if ($bootstrapFile) {
+            require_once $bootstrapFile;
+        }
 
         unset($_GET['flush']);
 
diff --git a/src/SilverStripe/BehatExtension/Context/Initializer/SilverStripeAwareInitializer.php b/src/SilverStripe/BehatExtension/Context/Initializer/SilverStripeAwareInitializer.php
index c26a577..2c7f56e 100644
--- a/src/SilverStripe/BehatExtension/Context/Initializer/SilverStripeAwareInitializer.php
+++ b/src/SilverStripe/BehatExtension/Context/Initializer/SilverStripeAwareInitializer.php
@@ -6,6 +6,7 @@ use Behat\Behat\Context\Initializer\InitializerInterface;
 use Behat\Behat\Context\ContextInterface;
 use SilverStripe\BehatExtension\Context\SilverStripeAwareContextInterface;
 use SilverStripe\Core\Injector\Injector;
+use SilverStripe\Dev\SapphireTest;
 
 /*
  * This file is part of the Behat/SilverStripeExtension
@@ -57,19 +58,19 @@ class SilverStripeAwareInitializer implements InitializerInterface
      */
     protected $testSessionEnvironment;
 
-    /**
-     * @var string PHP file to included before loading Core.php
-     */
-    protected $bootstrapFile;
-
     /**
      * Initializes initializer.
      *
      * @param string $frameworkPath
      */
-    public function __construct($frameworkPath, $bootstrapFile = null)
+    public function __construct($frameworkPath)
     {
-        $this->bootstrap($frameworkPath, $bootstrapFile);
+        file_put_contents('php://stdout', 'Bootstrapping' . PHP_EOL);
+
+        SapphireTest::start();
+
+        // Remove the error handler so that PHPUnit can add its own
+        restore_error_handler();
 
         file_put_contents('php://stdout', "Creating test session environment" . PHP_EOL);
 
@@ -188,25 +189,4 @@ class SilverStripeAwareInitializer implements InitializerInterface
     {
         $this->regionMap = $regionMap;
     }
-
-    /**
-     * @param string $frameworkPath Absolute path to 'framework' module
-     */
-    protected function bootstrap($frameworkPath, $bootstrapFile = null)
-    {
-        file_put_contents('php://stdout', 'Bootstrapping' . PHP_EOL);
-
-        // Require a bootstrap file, if provided
-        if ($bootstrapFile) {
-            require_once($bootstrapFile);
-        }
-
-        // Connect to database and build manifest
-        $_GET['flush'] = 1;
-        require_once('Core/Core.php');
-        unset($_GET['flush']);
-
-        // Remove the error handler so that PHPUnit can add its own
-        restore_error_handler();
-    }
 }
diff --git a/src/SilverStripe/BehatExtension/services/silverstripe.yml b/src/SilverStripe/BehatExtension/services/silverstripe.yml
index a204ac7..3e699ce 100644
--- a/src/SilverStripe/BehatExtension/services/silverstripe.yml
+++ b/src/SilverStripe/BehatExtension/services/silverstripe.yml
@@ -18,7 +18,6 @@ services:
     class: %behat.silverstripe_extension.context.initializer.class%
     arguments:
       - %behat.silverstripe_extension.framework_path%
-      - %behat.silverstripe_extension.bootstrap_file%
     calls:
       - [setAjaxSteps, [%behat.silverstripe_extension.ajax_steps%]]
       - [setAjaxTimeout, [%behat.silverstripe_extension.ajax_timeout%]]