diff --git a/cmd/zetaclientd/start.go b/cmd/zetaclientd/start.go
index fb2b54dfd0..fb3591c8e1 100644
--- a/cmd/zetaclientd/start.go
+++ b/cmd/zetaclientd/start.go
@@ -255,7 +255,7 @@ func start(_ *cobra.Command, _ []string) error {
 						pingRTT[p] = -1 // RTT -1 indicate ping error
 						return
 					}
-					pingRTT[p] = result.RTT.Milliseconds()
+					pingRTT[p] = result.RTT.Nanoseconds()
 				}(p)
 			}
 			wg.Wait()