diff --git a/api.go b/api.go
index dce1ad86..a5c23486 100644
--- a/api.go
+++ b/api.go
@@ -234,9 +234,9 @@ func (h *Headscale) RegistrationHandler(
 				log.Debug().
 					Caller().
 					Str("machine", registerRequest.Hostinfo.Hostname).
-					Str("NodeKey", registerRequest.NodeKey.ShortString()).
-					Str("OldNodeKey", registerRequest.OldNodeKey.ShortString()).
-					Str("Followup", registerRequest.Followup).
+					Str("node_key", registerRequest.NodeKey.ShortString()).
+					Str("node_key_old", registerRequest.OldNodeKey.ShortString()).
+					Str("follow_up", registerRequest.Followup).
 					Msg("Machine is waiting for interactive login")
 
 				ticker := time.NewTicker(registrationHoldoff)