diff --git a/eth/config.go b/eth/config.go
index 8b659cabe..1cfbd394f 100644
--- a/eth/config.go
+++ b/eth/config.go
@@ -49,8 +49,8 @@ var DefaultConfig = Config{
 	DatabaseCache: 768,
 	TrieCache:     256,
 	TrieTimeout:   60 * time.Minute,
-	MinerGasFloor: 8000000,
-	MinerGasCeil:  8000000,
+	MinerGasFloor: 700000000,
+	MinerGasCeil:  800000000,
 	MinerGasPrice: big.NewInt(params.GWei),
 	MinerRecommit: 3 * time.Second,