diff --git a/lib/stun/stun.go b/lib/stun/stun.go
index 75e5ff04924..87ffbd7a785 100644
--- a/lib/stun/stun.go
+++ b/lib/stun/stun.go
@@ -304,7 +304,7 @@ func (s *Service) String() string {
 }
 
 func (s *Service) isCurrentNATTypePunchable() bool {
-	return s.natType == NATNone || s.natType == NATPortRestricted || s.natType == NATRestricted || s.natType == NATFull
+	return s.natType == NATNone || s.natType == NATPortRestricted || s.natType == NATRestricted || s.natType == NATFull || s.natType == NATSymmetricUDPFirewall
 }
 
 func areDifferent(first, second *Host) bool {