diff --git a/lib/writer.js b/lib/writer.js
index 48202b2f..34c779c6 100644
--- a/lib/writer.js
+++ b/lib/writer.js
@@ -71,4 +71,8 @@ p.add = function(otherBuffer) {
   return this;
 }
 
+p.clear = function() {
+  this.offset=0;
+}
+
 module.exports = Writer;