diff --git a/buildbot/cbuildbot_config.py b/buildbot/cbuildbot_config.py
index 1e7fb0e..e8fce8c 100755
--- a/buildbot/cbuildbot_config.py
+++ b/buildbot/cbuildbot_config.py
@@ -957,7 +957,7 @@
   overlays=constants.BOTH_OVERLAYS,
   build_tests=True,
   unittests=True,
-  vm_tests=None,
+  vm_tests=constants.SIMPLE_AU_TEST_TYPE,
   prebuilts=False,
 )