diff --git a/lib/node.js b/lib/node.js
index 8e53ee7..2856723 100644
--- a/lib/node.js
+++ b/lib/node.js
@@ -160,7 +160,7 @@ Node.prototype.getBlock = function(number)
 			block.difficulty = web3.toDecimal(block.difficulty);
 
 			try {
-				block.txCount = web3.eth.transactionCount(block.hash);
+				block.txCount = web3.eth.transactionCount(block.hash) || '?';
 			}
 			catch (err) {
 				console.log(err);