diff --git a/tests/includes/listener-loader.php b/tests/includes/listener-loader.php
index 030a77f9c14..0e5a40557ee 100644
--- a/tests/includes/listener-loader.php
+++ b/tests/includes/listener-loader.php
@@ -7,6 +7,25 @@
 
 $wp_tests_dir = getenv( 'WP_TESTS_DIR' ) ? getenv( 'WP_TESTS_DIR' ) : '/tmp/wordpress-tests-lib';
 
+// Polyfill a function that wasn't added until WordPress 5.1.
+if ( ! function_exists( 'tests_get_phpunit_version' ) ) {
+	/**
+	 * Retrieves PHPUnit runner version.
+	 */
+	function tests_get_phpunit_version() {
+		if ( class_exists( 'PHPUnit_Runner_Version' ) ) {
+			$version = PHPUnit_Runner_Version::id();
+		} elseif ( class_exists( 'PHPUnit\Runner\Version' ) ) {
+			// Must be parsable by PHP 5.2.x.
+			$version = call_user_func( 'PHPUnit\Runner\Version::id' );
+		} else {
+			$version = 0;
+		}
+
+		return $version;
+	}
+}
+
 /**
  * The listener-loader.php file wasn't introduced into the core test framework until r44701, which
  * means it came after WordPress 5.0 (r43971).
@@ -26,22 +45,3 @@ if ( file_exists( $wp_tests_dir . '/includes/listener-loader.php' ) ) {
 		require $wp_tests_dir . '/includes/speed-trap-listener.php';
 	}
 }
-
-// Polyfill a function that wasn't added until WordPress 5.1.
-if ( ! function_exists( 'tests_get_phpunit_version' ) ) {
-	/**
-	 * Retrieves PHPUnit runner version.
-	 */
-	function tests_get_phpunit_version() {
-		if ( class_exists( 'PHPUnit_Runner_Version' ) ) {
-			$version = PHPUnit_Runner_Version::id();
-		} elseif ( class_exists( 'PHPUnit\Runner\Version' ) ) {
-			// Must be parsable by PHP 5.2.x.
-			$version = call_user_func( 'PHPUnit\Runner\Version::id' );
-		} else {
-			$version = 0;
-		}
-
-		return $version;
-	}
-}