diff --git a/lib/collection.js b/lib/collection.js
index 2a631c9..9f625ab 100644
--- a/lib/collection.js
+++ b/lib/collection.js
@@ -82,7 +82,7 @@ Collection.prototype.addBlock = function(id, stats, callback)
 			{
 				this._highestBlock = block.block.number;
 				this._externalAPI.write({
-					action:"bestBlock",
+					action:"lastBlock",
 					number: this._highestBlock
 				});
 			}