diff --git a/models/node.js b/models/node.js
index c30f19f..7acacdd 100644
--- a/models/node.js
+++ b/models/node.js
@@ -49,7 +49,7 @@ Node.prototype.update = function()
 
 	if(this.info.stats.peers != null) {
 		this.info.stats.block = eth.block(parseInt(eth.number));
-		if(this.info.stats.block.hash != '?'){
+		if(this.info.stats.block.hash != '?' && typeof this.info.stats.block.difficulty !== 'undefined'){
 			this.info.stats.block.difficulty = this.web3.toDecimal(this.info.stats.block.difficulty);
 		}
 		this.info.stats.mining = eth.mining;
@@ -65,4 +65,4 @@ Node.prototype.update = function()
 	return this.info;
 };
 
-module.exports = Node;
\ No newline at end of file
+module.exports = Node;