diff --git a/src/less-compile-cache.coffee b/src/less-compile-cache.coffee
index 935f53339..ad9024faa 100644
--- a/src/less-compile-cache.coffee
+++ b/src/less-compile-cache.coffee
@@ -5,6 +5,7 @@ LessCache = require 'less-cache'
 
 tmpDir = if process.platform is 'win32' then os.tmpdir() else '/tmp'
 
+# Private: {LessCache} wrapper used by {ThemeManager} to read stylesheets.
 module.exports =
 class LessCompileCache
   Subscriber.includeInto(this)