--- a/taskcluster/ci/test/tests.yml
+++ b/taskcluster/ci/test/tests.yml
@@ -385,17 +385,19 @@ marionette-headless:
             default: ['all']
     mozharness:
         by-test-platform:
             default:
                 script: marionette.py
                 no-read-buildbot-config: true
                 config:
                     by-test-platform:
-                        macosx.*: 
+                        windows.*:
+                            - marionette/windows_taskcluster_config.py
+                        macosx.*:
                             - marionette/prod_config.py
                         default:
                             - marionette/prod_config.py
                             - remove_executables.py
                 extra-options:
                     by-test-platform:
                         default:
                             - --headless