diff --git a/tools/run_tests/run_performance_tests.py b/tools/run_tests/run_performance_tests.py
index 9c1579c3312fc859663b4b8321b68c89e649548f..d0744b6333d1dcd46af3c37af0282f38a1c31db6 100755
--- a/tools/run_tests/run_performance_tests.py
+++ b/tools/run_tests/run_performance_tests.py
@@ -67,7 +67,7 @@ class QpsWorkerJob:
     self._job = None
 
   def start(self):
-    self._job = jobset.Job(spec, newline_on_success=True, travis=True, add_env={})
+    self._job = jobset.Job(self._spec, newline_on_success=True, travis=True, add_env={})
 
   def is_running(self):
     """Polls a job and returns True if given job is still running."""