diff --git a/lib/history.js b/lib/history.js
index decfa7d..b238271 100644
--- a/lib/history.js
+++ b/lib/history.js
@@ -606,7 +606,7 @@ History.prototype.getCharts = function()
 					blocktime: item.block.time / 1000,
 					difficulty: item.block.difficulty,
 					uncles: item.block.uncles.length,
-					transactions: item.block.transactions.length,
+					transactions: item.block.transactions ? item.block.transactions.length : 0,
 					gasSpending: item.block.gasUsed,
 					gasLimit: item.block.gasLimit,
 					miner: item.block.miner