diff --git a/lib/internal/fs/streams.js b/lib/internal/fs/streams.js
index 6f747cc3c8c63f..6c9910703adbaa 100644
--- a/lib/internal/fs/streams.js
+++ b/lib/internal/fs/streams.js
@@ -189,8 +189,7 @@ ReadStream.prototype._read = function(n) {
 };
 
 ReadStream.prototype._destroy = function(err, cb) {
-  const isOpen = typeof this.fd !== 'number';
-  if (isOpen) {
+  if (typeof this.fd !== 'number') {
     this.once('open', closeFsStream.bind(null, this, cb, err));
     return;
   }