diff --git a/p2p/nat/nat.go b/p2p/nat/nat.go
index 1c8495aa5bfa7910a3d242f26d69c2ec2aa8bfda..1fe06b97da40646e083661fa56aa54af4ebe3f5d 100644
--- a/p2p/nat/nat.go
+++ b/p2p/nat/nat.go
@@ -106,7 +106,7 @@ func Map(m Interface, c <-chan struct{}, protocol string, extport, intport int,
 		m.DeleteMapping(protocol, extport, intport)
 	}()
 	if err := m.AddMapping(protocol, extport, intport, name, mapTimeout); err != nil {
-		log.Warn("Couldn't add port mapping", "err", err)
+		log.Debug("Couldn't add port mapping", "err", err)
 	} else {
 		log.Info("Mapped network port")
 	}
@@ -119,7 +119,7 @@ func Map(m Interface, c <-chan struct{}, protocol string, extport, intport int,
 		case <-refresh.C:
 			log.Trace("Refreshing port mapping")
 			if err := m.AddMapping(protocol, extport, intport, name, mapTimeout); err != nil {
-				log.Warn("Couldn't add port mapping", "err", err)
+				log.Debug("Couldn't add port mapping", "err", err)
 			}
 			refresh.Reset(mapTimeout)
 		}