diff --git a/packages/metrics/src/constants.ts b/packages/metrics/src/constants.ts
index 5dd25e2aee..a3c2ee9e4c 100644
--- a/packages/metrics/src/constants.ts
+++ b/packages/metrics/src/constants.ts
@@ -31,6 +31,7 @@ const MetricUnit = {
   GigabitsPerSecond: 'Gigabits/Second',
   TerabitsPerSecond: 'Terabits/Second',
   CountPerSecond: 'Count/Second',
+  NoUnit: 'None',
 } as const;
 
 const MetricResolution = {