diff --git a/swarm/swarm.go b/swarm/swarm.go
index ae5a0a18ab..545b94b406 100644
--- a/swarm/swarm.go
+++ b/swarm/swarm.go
@@ -248,7 +248,7 @@ func detectEnsAddr(client *rpc.Client) (common.Address, error) {
 
 	switch {
 
-	case version == "1" && block.Hash() == params./:
+	case version == "1" && block.Hash() == params.MainnetGenesisHash:
 		log.Info("using Mainnet ENS contract address", "addr", ens.MainNetAddress)
 		return ens.MainNetAddress, nil