diff --git a/src/ui/newsletter.php b/src/ui/newsletter.php
index 81ed3b8c7..9b247025f 100644
--- a/src/ui/newsletter.php
+++ b/src/ui/newsletter.php
@@ -16,7 +16,6 @@ public static function newsletter_signup_form() {
 
 		$newsletter_form_response = self::newsletter_handle_form();
 
-
 		$copy = \sprintf(
 		/* translators: 1: Yoast */
 			\esc_html__(
diff --git a/tests/Unit/Admin/Options_Form_Generator_Test.php b/tests/Unit/Admin/Options_Form_Generator_Test.php
index 3ee87ccce..09d9504da 100644
--- a/tests/Unit/Admin/Options_Form_Generator_Test.php
+++ b/tests/Unit/Admin/Options_Form_Generator_Test.php
@@ -249,7 +249,7 @@ public function test_generate_options_input_for_suboptions() {
 		Monkey\Functions\expect( 'checked' )
 			->once()
 			->andReturnUsing(
-				static function( $checked, $current = true ) {
+				static function ( $checked, $current = true ) {
 					return ( (string) $checked === (string) $current ) ? " checked='checked'" : '';
 				}
 			);
@@ -345,7 +345,7 @@ public function test_generate_taxonomy_exclusion_list() {
 		Monkey\Functions\expect( 'checked' )
 			->times( 4 )
 			->andReturnUsing(
-				static function( $checked, $current = true ) {
+				static function ( $checked, $current = true ) {
 					return ( (string) $checked === (string) $current ) ? " checked='checked'" : '';
 				}
 			);
@@ -381,7 +381,7 @@ public function test_generate_roles_permission_list() {
 		Monkey\Functions\expect( 'checked' )
 			->twice()
 			->andReturnUsing(
-				static function( $checked, $current = true ) {
+				static function ( $checked, $current = true ) {
 					return ( (string) $checked === (string) $current ) ? " checked='checked'" : '';
 				}
 			);
@@ -421,7 +421,7 @@ public function test_generate_post_types_list() {
 		Monkey\Functions\expect( 'checked' )
 			->twice()
 			->andReturnUsing(
-				static function( $checked, $current = true ) {
+				static function ( $checked, $current = true ) {
 					return ( (string) $checked === (string) $current ) ? " checked='checked'" : '';
 				}
 			);
diff --git a/tests/Unit/Admin/Options_Inputs_Test.php b/tests/Unit/Admin/Options_Inputs_Test.php
index 9f06b5776..3f5baba43 100644
--- a/tests/Unit/Admin/Options_Inputs_Test.php
+++ b/tests/Unit/Admin/Options_Inputs_Test.php
@@ -39,7 +39,7 @@ public function test_checkbox() {
 		Functions\expect( 'checked' )
 			->twice()
 			->andReturnUsing(
-				static function( $checked, $current = true ) {
+				static function ( $checked, $current = true ) {
 					return ( (string) $checked === (string) $current ) ? " checked='checked'" : '';
 				}
 			);
diff --git a/tests/WP/Post_Duplicator_Test.php b/tests/WP/Post_Duplicator_Test.php
index 3781b52c1..9d08ae5fd 100644
--- a/tests/WP/Post_Duplicator_Test.php
+++ b/tests/WP/Post_Duplicator_Test.php
@@ -2,8 +2,8 @@
 
 namespace Yoast\WP\Duplicate_Post\Tests\WP;
 
-use Yoast\WPTestUtils\WPIntegration\TestCase;
 use Yoast\WP\Duplicate_Post\Post_Duplicator;
+use Yoast\WPTestUtils\WPIntegration\TestCase;
 
 /**
  * Class Post_Duplicator.
diff --git a/tests/WP/bootstrap.php b/tests/WP/bootstrap.php
index 2785db2a3..dec7ef20f 100644
--- a/tests/WP/bootstrap.php
+++ b/tests/WP/bootstrap.php
@@ -27,7 +27,7 @@
 
 \tests_add_filter(
 	'muplugins_loaded',
-	function() {
+	static function () {
 		require_once \dirname( __DIR__, 2 ) . '/duplicate-post.php';
 	}
 );