diff --git a/tests/test-post-filters.php b/tests/test-post-filters.php
index d886d036c99e5275b8bb500bfc53457638bf39a8..38a9037395fda06d94e906f60491742462ada4dd 100755
--- a/tests/test-post-filters.php
+++ b/tests/test-post-filters.php
@@ -37,7 +37,7 @@ class PostFilters extends WP_UnitTestCase {
 	/**
 	 * Prepare data for tests.
 	 */
-	public function setUp() {
+	protected function setUp() {
 		parent::setUp();
 
 		static::$post_id = $this->factory->post->create(