diff --git a/backend/api/controllers/result.ts b/backend/api/controllers/result.ts
index 36a00d3a3..7c28af45b 100644
--- a/backend/api/controllers/result.ts
+++ b/backend/api/controllers/result.ts
@@ -152,6 +152,7 @@ class ResultController {
           lastTimestamp: lastResultTimestamp,
           earliestPossible,
           now: nowNoMilis,
+          testDuration: testDurationMilis,
           difference: nowNoMilis - earliestPossible,
         },
         uid