diff --git a/src/StreamWrapper/Foxml.php b/src/StreamWrapper/Foxml.php
index b128ccd..4a4d834 100644
--- a/src/StreamWrapper/Foxml.php
+++ b/src/StreamWrapper/Foxml.php
@@ -135,8 +135,6 @@ public function getDescription() {
     return 'FOXML object/datastream storage dereferencing.';
   }
 
-
-
   /**
    * {@inheritDoc}
    * phpcs:disable Drupal.NamingConventions.ValidFunctionName.ScopeNotCamelCaps
diff --git a/src/StreamWrapper/NotWritableTrait.php b/src/StreamWrapper/NotWritableTrait.php
index 6e489d4..6a57ba6 100644
--- a/src/StreamWrapper/NotWritableTrait.php
+++ b/src/StreamWrapper/NotWritableTrait.php
@@ -6,7 +6,6 @@
  * Helper trait to mask writability from file modes.
  */
 trait NotWritableTrait {
-  protected const WRITE_MASK = ~0o222;
 
   /**
    * Apply mask to suppress writability being reported.
@@ -22,7 +21,7 @@ protected static function applyMask(array|false $result) : array|false {
       return FALSE;
     }
 
-    $result[2] = ($result['mode'] &= static::WRITE_MASK);
+    $result[2] = ($result['mode'] &= !0o222);
 
     return $result;
   }