diff --git a/lib/ber/reader.js b/lib/ber/reader.js
index 8a7e4ca..6a6bf43 100644
--- a/lib/ber/reader.js
+++ b/lib/ber/reader.js
@@ -90,8 +90,6 @@ Reader.prototype.readLength = function (offset) {
     return null;
 
   var lenB = this._buf[offset++] & 0xff;
-  if (lenB === null)
-    return null;
 
   if ((lenB & 0x80) === 0x80) {
     lenB &= 0x7f;