diff --git a/src/device/input/parse/v01/server.go b/src/device/input/parse/v01/server.go
index 9db8b70..6a8f254 100644
--- a/src/device/input/parse/v01/server.go
+++ b/src/device/input/parse/v01/server.go
@@ -208,7 +208,7 @@ func (v01 *V01) serveGMStatus(w io.Writer) {
 		}
 
 		if ms := time.Duration(v.Meta.LastLag) * time.Millisecond; v.Meta.LastLag > 0 && ms < time.Minute {
-			result += fmt.Sprintf("%s ", lag)
+			result += fmt.Sprintf("%s ", ms.String())
 		}
 
 		if result == "" {