diff --git a/src/Composer/Autoload/ClassMapGenerator.php b/src/Composer/Autoload/ClassMapGenerator.php
index 539eb77a0..3ad26f7f2 100644
--- a/src/Composer/Autoload/ClassMapGenerator.php
+++ b/src/Composer/Autoload/ClassMapGenerator.php
@@ -123,6 +123,8 @@ class ClassMapGenerator
         }
 
         try {
+            // Use @ here instead of Silencer to actively suppress 'unhelpful' output
+            // @link https://github.com/composer/composer/pull/4886
             $contents = @php_strip_whitespace($path);
             if (!$contents) {
                 if (!file_exists($path)) {