--- a/mozilla-tests/config.py
+++ b/mozilla-tests/config.py
@@ -1183,16 +1183,19 @@ PLATFORM_UNITTEST_VARS = {
             'debug_unittest_suites': MOCHITEST + REFTEST_NO_IPC + XPCSHELL + CPPUNIT + MOCHITEST_DT_3,
             'suite_config': {
                 'mochitest': {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'mochitest-e10s': {
                     'config_files': ["unittests/win_unittest.py"],
                 },
+                'mochitest-csb': {
+                    'config_files': ["unittests/win_unittest.py"],
+                },
                 'mochitest-browser-chrome': {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'mochitest-e10s-browser-chrome': {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'mochitest-other': {
                     'config_files': ["unittests/win_unittest.py"],