diff --git a/testutil/testutil.go b/testutil/testutil.go
index 1c98ac5..f136ea5 100644
--- a/testutil/testutil.go
+++ b/testutil/testutil.go
@@ -26,6 +26,7 @@ func Network() (*consensus.Network, types.Block) {
 	return n, genesisBlock
 }
 
+// V2Network returns a test network and genesis block with early V2 hardforks
 func V2Network() (*consensus.Network, types.Block) {
 	// use a modified version of Zen
 	n, genesisBlock := chain.TestnetZen()