diff --git a/core/blockchain.go b/core/blockchain.go
index f6a7054361..ba70e1aaf6 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -87,7 +87,7 @@ const (
 	maxFutureBlocks     = 256
 	maxTimeFutureBlocks = 30
 	badBlockLimit       = 10
-	TriesInMemory       = 1024
+	TriesInMemory       = 128
 
 	// BlockChainVersion ensures that an incompatible database forces a resync from scratch.
 	//