diff --git a/p2p/peer.go b/p2p/peer.go
index d31ff4554..02d9d7c67 100644
--- a/p2p/peer.go
+++ b/p2p/peer.go
@@ -400,7 +400,7 @@ func createMConnection(
 	onReceive := func(chID byte, msgBytes []byte) {
 		before := time.Now()
 		defer func() {
-			p.metrics.MessageReceiveTime.Observe(float64(time.Since(before)))
+			p.metrics.MessageReceiveTime.Observe(time.Since(before).Seconds())
 		}()
 		reactor := reactorsByCh[chID]
 		if reactor == nil {