diff --git a/tests/functional/auth_test.php b/tests/functional/auth_test.php
index a0c909e798..afb4f15fc2 100644
--- a/tests/functional/auth_test.php
+++ b/tests/functional/auth_test.php
@@ -17,7 +17,7 @@ class phpbb_functional_auth_test extends phpbb_functional_test_case
 		$this->login();
 
 		// check for logout link
-		$crawler = $this->request('GET', 'index.php');
+		$crawler = self::request('GET', 'index.php');
 		$this->assertContains($this->lang('LOGOUT_USER', 'admin'), $crawler->filter('.navbar')->text());
 	}
 
@@ -25,7 +25,7 @@ class phpbb_functional_auth_test extends phpbb_functional_test_case
 	{
 		$this->create_user('anothertestuser');
 		$this->login('anothertestuser');
-		$crawler = $this->request('GET', 'index.php');
+		$crawler = self::request('GET', 'index.php');
 		$this->assertContains('anothertestuser', $crawler->filter('.icon-logout')->text());
 	}
 
@@ -38,11 +38,11 @@ class phpbb_functional_auth_test extends phpbb_functional_test_case
 		$this->add_lang('ucp');
 
 		// logout
-		$crawler = $this->request('GET', 'ucp.php?sid=' . $this->sid . '&mode=logout');
+		$crawler = self::request('GET', 'ucp.php?sid=' . $this->sid . '&mode=logout');
 		$this->assertContains($this->lang('LOGOUT_REDIRECT'), $crawler->filter('#message')->text());
 
 		// look for a register link, which should be visible only when logged out
-		$crawler = $this->request('GET', 'index.php');
+		$crawler = self::request('GET', 'index.php');
 		$this->assertContains($this->lang('REGISTER'), $crawler->filter('.navbar')->text());
 	}
 }
diff --git a/tests/functional/browse_test.php b/tests/functional/browse_test.php
index 26c18c4c1f..18a2ad9464 100644
--- a/tests/functional/browse_test.php
+++ b/tests/functional/browse_test.php
@@ -14,19 +14,19 @@ class phpbb_functional_browse_test extends phpbb_functional_test_case
 {
 	public function test_index()
 	{
-		$crawler = $this->request('GET', 'index.php');
+		$crawler = self::request('GET', 'index.php');
 		$this->assertGreaterThan(0, $crawler->filter('.topiclist')->count());
 	}
 
 	public function test_viewforum()
 	{
-		$crawler = $this->request('GET', 'viewforum.php?f=2');
+		$crawler = self::request('GET', 'viewforum.php?f=2');
 		$this->assertGreaterThan(0, $crawler->filter('.topiclist')->count());
 	}
 
 	public function test_viewtopic()
 	{
-		$crawler = $this->request('GET', 'viewtopic.php?t=1');
+		$crawler = self::request('GET', 'viewtopic.php?t=1');
 		$this->assertGreaterThan(0, $crawler->filter('.postbody')->count());
 	}
 }
diff --git a/tests/functional/common_groups_test.php b/tests/functional/common_groups_test.php
index 6e1f1afdce..7c88ec900d 100644
--- a/tests/functional/common_groups_test.php
+++ b/tests/functional/common_groups_test.php
@@ -35,10 +35,10 @@ abstract class phpbb_functional_common_groups_test extends phpbb_functional_test
 		$this->add_lang(array('ucp', 'acp/groups'));
 
 		// Manage Administrators group
-		$crawler = $this->request('GET', $this->get_url() . '&g=5&sid=' . $this->sid);
+		$crawler = self::request('GET', $this->get_url() . '&g=5&sid=' . $this->sid);
 		$form = $crawler->selectButton($this->lang('SUBMIT'))->form();
 		$form['group_colour']->setValue($input);
-		$crawler = $this->submit($form);
+		$crawler = self::submit($form);
 		$this->assertContains($this->lang($expected), $crawler->text());
 	}
 }
diff --git a/tests/functional/posting_test.php b/tests/functional/posting_test.php
index 5cf7559245..9bcfcc2fda 100644
--- a/tests/functional/posting_test.php
+++ b/tests/functional/posting_test.php
@@ -19,17 +19,17 @@ class phpbb_functional_posting_test extends phpbb_functional_test_case
 		// Test creating topic
 		$post = $this->create_topic(2, 'Test Topic 1', 'This is a test topic posted by the testing framework.');
 
-		$crawler = $this->request('GET', "viewtopic.php?t={$post['topic_id']}&sid={$this->sid}");
+		$crawler = self::request('GET', "viewtopic.php?t={$post['topic_id']}&sid={$this->sid}");
 		$this->assertContains('This is a test topic posted by the testing framework.', $crawler->filter('html')->text());
 
 		// Test creating a reply
 		$post2 = $this->create_post(2, $post['topic_id'], 'Re: Test Topic 1', 'This is a test post posted by the testing framework.');
 
-		$crawler = $this->request('GET', "viewtopic.php?t={$post2['topic_id']}&sid={$this->sid}");
+		$crawler = self::request('GET', "viewtopic.php?t={$post2['topic_id']}&sid={$this->sid}");
 		$this->assertContains('This is a test post posted by the testing framework.', $crawler->filter('html')->text());
 
 		// Test quoting a message
-		$crawler = $this->request('GET', "posting.php?mode=quote&f=2&t={$post2['topic_id']}&p={$post2['post_id']}&sid={$this->sid}");
+		$crawler = self::request('GET', "posting.php?mode=quote&f=2&t={$post2['topic_id']}&p={$post2['post_id']}&sid={$this->sid}");
 		$this->assertContains('This is a test post posted by the testing framework.', $crawler->filter('html')->text());
 	}
 
@@ -54,7 +54,7 @@ class phpbb_functional_posting_test extends phpbb_functional_test_case
 			'post'			=> true,
 		), $additional_form_data);
 
-		return $this->submit_post($posting_url, 'POST_TOPIC', $form_data);
+		return self::submit_post($posting_url, 'POST_TOPIC', $form_data);
 	}
 
 	/**
@@ -78,7 +78,7 @@ class phpbb_functional_posting_test extends phpbb_functional_test_case
 			'post'			=> true,
 		), $additional_form_data);
 
-		return $this->submit_post($posting_url, 'POST_REPLY', $form_data);
+		return self::submit_post($posting_url, 'POST_REPLY', $form_data);
 	}
 	
 	/**
@@ -93,7 +93,7 @@ class phpbb_functional_posting_test extends phpbb_functional_test_case
 	{
 		$this->add_lang('posting');
 
-		$crawler = $this->request('GET', $posting_url);
+		$crawler = self::request('GET', $posting_url);
 		$this->assertContains($this->lang($posting_contains), $crawler->filter('html')->text());
 
 		$hidden_fields = array(
@@ -117,7 +117,7 @@ class phpbb_functional_posting_test extends phpbb_functional_test_case
 		// I use a request because the form submission method does not allow you to send data that is not
 		// contained in one of the actual form fields that the browser sees (i.e. it ignores "hidden" inputs)
 		// Instead, I send it as a request with the submit button "post" set to true.
-		$crawler = $this->request('POST', $posting_url, $form_data);
+		$crawler = self::request('POST', $posting_url, $form_data);
 		$this->assertContains($this->lang('POST_STORED'), $crawler->filter('html')->text());
 
 		$url = $crawler->selectLink($this->lang('VIEW_MESSAGE', '', ''))->link()->getUri();
diff --git a/tests/test_framework/phpbb_functional_test_case.php b/tests/test_framework/phpbb_functional_test_case.php
index 04a43182ae..a0dceb152b 100644
--- a/tests/test_framework/phpbb_functional_test_case.php
+++ b/tests/test_framework/phpbb_functional_test_case.php
@@ -344,11 +344,11 @@ class phpbb_functional_test_case extends phpbb_test_case
 	{
 		$this->add_lang('ucp');
 
-		$crawler = $this->request('GET', 'ucp.php');
+		$crawler = self::request('GET', 'ucp.php');
 		$this->assertContains($this->lang('LOGIN_EXPLAIN_UCP'), $crawler->filter('html')->text());
 
 		$form = $crawler->selectButton($this->lang('LOGIN'))->form();
-		$crawler = $this->submit($form, array('username' => $username, 'password' => $username . $username));
+		$crawler = self::submit($form, array('username' => $username, 'password' => $username . $username));
 		$this->assert_response_success();
 		$this->assertContains($this->lang('LOGIN_REDIRECT'), $crawler->filter('html')->text());
 
@@ -379,7 +379,7 @@ class phpbb_functional_test_case extends phpbb_test_case
 			return;
 		}
 
-		$crawler = $this->request('GET', 'adm/index.php?sid=' . $this->sid);
+		$crawler = self::request('GET', 'adm/index.php?sid=' . $this->sid);
 		$this->assertContains($this->lang('LOGIN_ADMIN_CONFIRM'), $crawler->filter('html')->text());
 
 		$form = $crawler->selectButton($this->lang('LOGIN'))->form();
@@ -388,7 +388,7 @@ class phpbb_functional_test_case extends phpbb_test_case
 		{
 			if (strpos($field, 'password_') === 0)
 			{
-				$crawler = $this->submit($form, array('username' => $username, $field => $username . $username));
+				$crawler = self::submit($form, array('username' => $username, $field => $username . $username));
 				$this->assert_response_success();
 				$this->assertContains($this->lang('LOGIN_ADMIN_SUCCESS'), $crawler->filter('html')->text());