diff --git a/lib/bcoin/bst.js b/lib/bcoin/bst.js
index ff96e6ae..a11aa418 100644
--- a/lib/bcoin/bst.js
+++ b/lib/bcoin/bst.js
@@ -493,7 +493,7 @@ Batch.prototype.write = function write(callback) {
   return this;
 };
 
-Batch.prototype.clear = function clear(callback) {
+Batch.prototype.clear = function clear() {
   assert(this.tree, 'Already written.');
   this.ops.length = 0;
   return this;