diff --git a/stats/units.go b/stats/units.go
index 6931a5f29..736399652 100644
--- a/stats/units.go
+++ b/stats/units.go
@@ -22,4 +22,5 @@ const (
 	UnitDimensionless = "1"
 	UnitBytes         = "By"
 	UnitMilliseconds  = "ms"
+	UnitSeconds       = "s"
 )