diff --git a/src/markup/syntax/engine/PhutilDefaultSyntaxHighlighterEngine.php b/src/markup/syntax/engine/PhutilDefaultSyntaxHighlighterEngine.php
--- a/src/markup/syntax/engine/PhutilDefaultSyntaxHighlighterEngine.php
+++ b/src/markup/syntax/engine/PhutilDefaultSyntaxHighlighterEngine.php
@@ -82,7 +82,7 @@
 
     if ($language == 'invisible') {
       return id(new PhutilInvisibleSyntaxHighlighter())
-             ->getHighlightFuture($source);
+        ->getHighlightFuture($source);
     }
 
     // Don't invoke Pygments for plain text, since it's expensive and has