diff --git a/src/transaction_builder.js b/src/transaction_builder.js
index 763cd1c..cafcfc8 100644
--- a/src/transaction_builder.js
+++ b/src/transaction_builder.js
@@ -1,5 +1,4 @@
 var assert = require('assert')
-var bufferutils = require('./bufferutils')
 var ops = require('./opcodes')
 var scripts = require('./scripts')