diff --git a/lib/history.js b/lib/history.js
index a5566ba..6b19cc4 100644
--- a/lib/history.js
+++ b/lib/history.js
@@ -202,12 +202,7 @@ function compareBlocks(block1, block2)
 		block1.stateRoot 			!== block2.stateRoot ||
 		block1.miner 				!== block2.miner ||
 		block1.difficulty 			!== block2.difficulty ||
-		block1.totalDifficulty 		!== block2.totalDifficulty ||
-		block1.extraData 			!== block2.extraData ||
-		block1.gasLimit 			!== block2.gasLimit ||
-		block1.gasUsed 				!== block2.gasUsed ||
-		block1.transactions.length 	!== block2.transactions.length ||
-		block1.uncles.length 		!== block2.uncles.length)
+		block1.totalDifficulty 		!== block2.totalDifficulty)
 		return false;
 
 	return true;