diff --git a/tools/run_tests/jobset.py b/tools/run_tests/jobset.py
index adf178bb3c359279afb2bfefdc70f752cfa6007c..a3b246dc084b295d17742d1e2b81d6caa4070a46 100755
--- a/tools/run_tests/jobset.py
+++ b/tools/run_tests/jobset.py
@@ -384,7 +384,8 @@ class Jobset(object):
                 self._travis,
                 self._add_env)
       self._running.add(job)
-      self.resultset[job.GetSpec().shortname] = []
+      if not self.resultset.has_key(job.GetSpec().shortname):
+        self.resultset[job.GetSpec().shortname] = []
     return True
 
   def reap(self):