diff --git a/lib/history.js b/lib/history.js
index 27deeca..b0aaf92 100644
--- a/lib/history.js
+++ b/lib/history.js
@@ -204,7 +204,6 @@ function compareBlocks(block1, block2)
 		block1.miner 				!== block2.miner ||
 		block1.difficulty 			!== block2.difficulty ||
 		block1.totalDifficulty 		!== block2.totalDifficulty ||
-		block1.size 				!== block2.size ||
 		block1.extraData 			!== block2.extraData ||
 		block1.gasLimit 			!== block2.gasLimit ||
 		block1.gasUsed 				!== block2.gasUsed ||