diff --git a/tools/run_tests/run_performance_tests.py b/tools/run_tests/run_performance_tests.py
index 2722d803530afcc7d7ddff07939a4b279392b87c..9c1579c3312fc859663b4b8321b68c89e649548f 100755
--- a/tools/run_tests/run_performance_tests.py
+++ b/tools/run_tests/run_performance_tests.py
@@ -431,7 +431,7 @@ for job in qpsworker_jobs:
   workers_by_lang[str(job.language)].append(job)
 
 scenarios = create_scenarios(languages,
-                           workers_by_lang=worker_addresses,
+                           workers_by_lang=workers_by_lang,
                            remote_host=args.remote_driver_host,
                            regex=args.regex,
                            category=args.category,