diff --git a/miner/stress_ethash.go b/miner/stress_ethash.go
index 988a15c488..94d5b30aa5 100644
--- a/miner/stress_ethash.go
+++ b/miner/stress_ethash.go
@@ -133,7 +133,7 @@ func main() {
 // makeGenesis creates a custom Ethash genesis block based on some pre-defined
 // faucet accounts.
 func makeGenesis(faucets []*ecdsa.PrivateKey) *core.Genesis {
-	genesis := core.DefaultTestnetGenesisBlock()
+	genesis := core.DefaultRopstenGenesisBlock()
 	genesis.Difficulty = params.MinimumDifficulty
 	genesis.GasLimit = 25000000