diff --git a/kernel/cache/asset.go b/kernel/cache/asset.go
index c958561b5..13d5ebc55 100644
--- a/kernel/cache/asset.go
+++ b/kernel/cache/asset.go
@@ -60,6 +60,6 @@ func LoadAssets() {
 	})
 	elapsed := time.Since(start)
 	if 2000 < elapsed.Milliseconds() {
-		util.LogInfof("loaded assets [%s]", elapsed)
+		util.LogInfof("loaded assets [%.2fs]", elapsed.Seconds())
 	}
 }