diff --git a/src/StorageDirectories.php b/src/StorageDirectories.php
index 753cc38..c4e6eb4 100644
--- a/src/StorageDirectories.php
+++ b/src/StorageDirectories.php
@@ -31,7 +31,7 @@ public static function create()
 
         $directories = array_filter($directories, static fn ($directory) => ! is_dir($directory));
 
-        if (count($directories)) {
+        if (count($directories) && defined('STDERR')) {
             fwrite(STDERR, 'Creating storage directories: ' . implode(', ', $directories) . PHP_EOL);
         }