diff --git a/lib/tun2/server.go b/lib/tun2/server.go
index 57ef639..f3cea7f 100644
--- a/lib/tun2/server.go
+++ b/lib/tun2/server.go
@@ -165,10 +165,12 @@ func (s *Server) ListenAndServe() error {
 			for _, c := range s.conns {
 				failureChance := c.detector.Phi(now)
 
-				ln.Log(c.F(), ln.F{
-					"action": "phi_failure_detection",
-					"value":  failureChance,
-				})
+				if failureChance != 0 {
+					ln.Log(c.F(), ln.F{
+						"action": "phi_failure_detection",
+						"value":  failureChance,
+					})
+				}
 			}
 			s.connlock.Unlock()
 		}