diff --git a/lib/node.js b/lib/node.js
index 4139b2f..c9ea939 100644
--- a/lib/node.js
+++ b/lib/node.js
@@ -44,7 +44,7 @@ var MAX_BLOCKS_HISTORY = 40;
 var UPDATE_INTERVAL = 5000;
 var PING_INTERVAL = 2000;
 var MINERS_LIMIT = 5;
-var MAX_HISTORY_UPDATE = 100;
+var MAX_HISTORY_UPDATE = 50;
 
 function Node()
 {