diff --git a/lib/seqbuffer.js b/lib/seqbuffer.js
index ce3ad33..76d081d 100644
--- a/lib/seqbuffer.js
+++ b/lib/seqbuffer.js
@@ -17,7 +17,7 @@ function trimZero(str) {
 
 function SeqBuffer(buf, len) {
 
-  this._data = buf || Buffer.alloc(len || 1500); // alloc() fills the buffer with '0'
+  this._data = buf || Buffer.alloc(len || 1400); // alloc() fills the buffer with '0'
 }
 
 SeqBuffer.prototype = {