diff --git a/Filesystem.php b/Filesystem.php
index c5cfa4714..700311d58 100644
--- a/Filesystem.php
+++ b/Filesystem.php
@@ -691,7 +691,7 @@ public function dumpFile(string $filename, $content)
                 throw new IOException(sprintf('Failed to write file "%s": ', $filename).self::$lastError, 0, null, $filename);
             }
 
-            self::box('chmod', $tmpFile, @fileperms($filename) ?: 0666 & ~umask());
+            self::box('chmod', $tmpFile, self::box('fileperms', $filename) ?: 0666 & ~umask());
 
             $this->rename($tmpFile, $filename, true);
         } finally {