diff --git a/src/filesystem/implementation.js b/src/filesystem/implementation.js
index 2c6cc69..9548971 100644
--- a/src/filesystem/implementation.js
+++ b/src/filesystem/implementation.js
@@ -1929,7 +1929,6 @@ function validateAndMaskMode(value, def, callback) {
     def = undefined;
   }
   if (isUint32(value)) {
-    let newMode = value & FULL_READ_WRITE_EXEC_PERMISSIONS;
     return value & FULL_READ_WRITE_EXEC_PERMISSIONS;
   }