diff --git a/src/IO/AbstractWKBWriter.php b/src/IO/AbstractWKBWriter.php
index 23fd3e1f..778dd218 100644
--- a/src/IO/AbstractWKBWriter.php
+++ b/src/IO/AbstractWKBWriter.php
@@ -42,7 +42,7 @@ public function __construct()
     }
 
     /**
-     * @param int $byteOrder The byte order, one of the BIG_ENDIAN or LITTLE_ENDIAN constants.
+     * @param int $byteOrder The byte order, one of the WKBTools::BIG_ENDIAN or WKBTools::LITTLE_ENDIAN constants.
      *
      * @return void
      *