diff --git a/pkg/node/message.go b/pkg/node/message.go
index cb7a085..e184608 100644
--- a/pkg/node/message.go
+++ b/pkg/node/message.go
@@ -19,7 +19,8 @@ const (
 // Used for version negotiation during handshake.
 var SupportedProtocolVersions = []string{"1.0"}
 
-// IsProtocolVersionSupported checks if a given version is supported.
+// if node.IsProtocolVersionSupported(peerVersion) { proceed() }
+// if !node.IsProtocolVersionSupported("2.0") { return errUnsupportedVersion }
 func IsProtocolVersionSupported(version string) bool {
 	for _, supported := range SupportedProtocolVersions {
 		if supported == version {