diff --git a/tstest/integration/testcontrol/testcontrol.go b/tstest/integration/testcontrol/testcontrol.go
index 2d6a84361..a6b2e1828 100644
--- a/tstest/integration/testcontrol/testcontrol.go
+++ b/tstest/integration/testcontrol/testcontrol.go
@@ -832,7 +832,7 @@ func (s *Server) serveMap(w http.ResponseWriter, r *http.Request, mkey key.Machi
 	w.WriteHeader(200)
 	for {
 		if resBytes, ok := s.takeRawMapMessage(req.NodeKey); ok {
-			if err := s.sendMapMsg(w, mkey, compress, resBytes); err != nil {
+			if err := s.sendMapMsg(w, compress, resBytes); err != nil {
 				s.logf("sendMapMsg of raw message: %v", err)
 				return
 			}
@@ -864,7 +864,7 @@ func (s *Server) serveMap(w http.ResponseWriter, r *http.Request, mkey key.Machi
 				s.logf("json.Marshal: %v", err)
 				return
 			}
-			if err := s.sendMapMsg(w, mkey, compress, resBytes); err != nil {
+			if err := s.sendMapMsg(w, compress, resBytes); err != nil {
 				return
 			}
 		}
@@ -895,7 +895,7 @@ func (s *Server) serveMap(w http.ResponseWriter, r *http.Request, mkey key.Machi
 				}
 				break keepAliveLoop
 			case <-keepAliveTimerCh:
-				if err := s.sendMapMsg(w, mkey, compress, keepAliveMsg); err != nil {
+				if err := s.sendMapMsg(w, compress, keepAliveMsg); err != nil {
 					return
 				}
 			}
@@ -1060,7 +1060,7 @@ func (s *Server) takeRawMapMessage(nk key.NodePublic) (mapResJSON []byte, ok boo
 	return mapResJSON, true
 }
 
-func (s *Server) sendMapMsg(w http.ResponseWriter, mkey key.MachinePublic, compress bool, msg any) error {
+func (s *Server) sendMapMsg(w http.ResponseWriter, compress bool, msg any) error {
 	resBytes, err := s.encode(compress, msg)
 	if err != nil {
 		return err