diff --git a/miner/miner.go b/miner/miner.go
index aaef07932d..ebf53199e9 100644
--- a/miner/miner.go
+++ b/miner/miner.go
@@ -62,7 +62,7 @@ type Config struct {
 
 // DefaultConfig contains default settings for miner.
 var DefaultConfig = Config{
-	GasCeil:  30000000,
+	GasCeil:  0,
 	GasPrice: big.NewInt(params.GWei),
 
 	// The default recommit time is chosen as two seconds since