diff --git a/app/Util/CspService.php b/app/Util/CspService.php
index ba927c93b..f9ab666ac 100644
--- a/app/Util/CspService.php
+++ b/app/Util/CspService.php
@@ -22,7 +22,7 @@ class CspService
     }
 
     /**
-     * Get the CSP headers for the application
+     * Get the CSP headers for the application.
      */
     public function getCspHeader(): string
     {
@@ -86,6 +86,7 @@ class CspService
     {
         $iframeHosts = $this->getAllowedIframeHosts();
         array_unshift($iframeHosts, "'self'");
+
         return 'frame-ancestors ' . implode(' ', $iframeHosts);
     }
 
@@ -97,6 +98,7 @@ class CspService
     {
         $iframeHosts = $this->getAllowedIframeSources();
         array_unshift($iframeHosts, "'self'");
+
         return 'frame-src ' . implode(' ', $iframeHosts);
     }
 
diff --git a/tests/SecurityHeaderTest.php b/tests/SecurityHeaderTest.php
index 1a0a6c9b3..d8ba5873f 100644
--- a/tests/SecurityHeaderTest.php
+++ b/tests/SecurityHeaderTest.php
@@ -130,7 +130,7 @@ class SecurityHeaderTest extends TestCase
     {
         config()->set([
             'app.iframe_sources' => 'https://example.com',
-            'services.drawio'   => 'https://diagrams.example.com/testing?cat=dog',
+            'services.drawio'    => 'https://diagrams.example.com/testing?cat=dog',
         ]);
 
         $resp = $this->get('/');