diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index 4f2f10f15c8dc5ac4c224100370b6f94fdbb092c..b7248e524b4c9bd0e96f566caaee29c1af55d39f 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -204,7 +204,7 @@ class TestCache(object):
 
 def _build_and_run(check_cancelled, newline_on_success, cache):
   """Do one pass of building & running tests."""
-  # build latest, sharing cpu between the various makes
+  # build latest sequentially
   if not jobset.run(build_steps, maxjobs=1):
     return 1