diff --git a/tests/phpunit/tests/post/revisions.php b/tests/phpunit/tests/post/revisions.php
index e4e0c500d5..c8effbccc2 100644
--- a/tests/phpunit/tests/post/revisions.php
+++ b/tests/phpunit/tests/post/revisions.php
@@ -5,6 +5,9 @@
  * @group revision
  */
 class Tests_Post_Revisions extends WP_UnitTestCase {
+
+	const POST_TYPE = 'test-revision';
+
 	protected static $admin_user_id;
 	protected static $editor_user_id;
 	protected static $author_user_id;
@@ -15,11 +18,6 @@ class Tests_Post_Revisions extends WP_UnitTestCase {
 		self::$author_user_id = $factory->user->create( array( 'role' => 'author' ) );
 	}
 
-	public function set_up() {
-		parent::set_up();
-		$this->post_type = 'test-revision';
-	}
-
 	/**
 	 * Note: Test needs reviewing when #16215 is fixed because I'm not sure the test current tests the "correct" behavior
 	 *
@@ -318,7 +316,7 @@ class Tests_Post_Revisions extends WP_UnitTestCase {
 	 */
 	public function test_revision_view_caps_cpt() {
 		register_post_type(
-			$this->post_type,
+			self::POST_TYPE,
 			array(
 				'capability_type' => 'event',
 				'map_meta_cap'    => true,
@@ -328,7 +326,7 @@ class Tests_Post_Revisions extends WP_UnitTestCase {
 
 		$post_id = self::factory()->post->create(
 			array(
-				'post_type'   => $this->post_type,
+				'post_type'   => self::POST_TYPE,
 				'post_author' => self::$editor_user_id,
 			)
 		);
@@ -360,7 +358,7 @@ class Tests_Post_Revisions extends WP_UnitTestCase {
 	 */
 	public function test_revision_restore_caps_cpt() {
 		register_post_type(
-			$this->post_type,
+			self::POST_TYPE,
 			array(
 				'capability_type' => 'event',
 				'map_meta_cap'    => true,
@@ -375,7 +373,7 @@ class Tests_Post_Revisions extends WP_UnitTestCase {
 		// Create a post as Editor.
 		$post_id = self::factory()->post->create(
 			array(
-				'post_type'   => $this->post_type,
+				'post_type'   => self::POST_TYPE,
 				'post_author' => self::$editor_user_id,
 			)
 		);
@@ -406,7 +404,7 @@ class Tests_Post_Revisions extends WP_UnitTestCase {
 	 */
 	public function test_revision_restore_caps_before_publish() {
 		register_post_type(
-			$this->post_type,
+			self::POST_TYPE,
 			array(
 				'capability_type' => 'post',
 				'capabilities'    => array(
@@ -424,7 +422,7 @@ class Tests_Post_Revisions extends WP_UnitTestCase {
 
 		$post_id = self::factory()->post->create(
 			array(
-				'post_type'   => $this->post_type,
+				'post_type'   => self::POST_TYPE,
 				'post_status' => 'draft',
 			)
 		);
@@ -466,7 +464,7 @@ class Tests_Post_Revisions extends WP_UnitTestCase {
 	 */
 	public function test_revision_diff_caps_cpt() {
 		register_post_type(
-			$this->post_type,
+			self::POST_TYPE,
 			array(
 				'capability_type' => 'event',
 				'map_meta_cap'    => true,
@@ -476,7 +474,7 @@ class Tests_Post_Revisions extends WP_UnitTestCase {
 
 		$post_id = self::factory()->post->create(
 			array(
-				'post_type'   => $this->post_type,
+				'post_type'   => self::POST_TYPE,
 				'post_author' => self::$editor_user_id,
 			)
 		);