diff --git a/perf/BenchmarkApp/configs/schedule.yaml b/perf/BenchmarkApp/configs/schedule.yaml
index 8e969a562..5c4d07db4 100644
--- a/perf/BenchmarkApp/configs/schedule.yaml
+++ b/perf/BenchmarkApp/configs/schedule.yaml
@@ -1,6 +1,6 @@
 type: loader
 branch-configs:
-  - suffix: ""
+  - suffix: "" # suffix should be unique with others
     branch: main
     config: ./perf/BenchmarkApp/configs/schedule_config.yaml
   - suffix: "-1"