diff --git a/testing/mozharness/configs/unittests/win_taskcluster_unittest.py b/testing/mozharness/configs/unittests/win_taskcluster_unittest.py
index 152cd1f94834..f715ad44e62a 100644
--- a/testing/mozharness/configs/unittests/win_taskcluster_unittest.py
+++ b/testing/mozharness/configs/unittests/win_taskcluster_unittest.py
@@ -229,7 +229,8 @@ config = {
         "gtest": []
     },
     "all_jittest_suites": {
-        "jittest": []
+        "jittest": [],
+        "jittest-chunked": [],
     },
     "all_mozbase_suites": {
         "mozbase": []