diff --git a/testing/mozharness/configs/unittests/win_taskcluster_unittest.py b/testing/mozharness/configs/unittests/win_taskcluster_unittest.py
index 9db10c32feae..a36100a53b60 100644
--- a/testing/mozharness/configs/unittests/win_taskcluster_unittest.py
+++ b/testing/mozharness/configs/unittests/win_taskcluster_unittest.py
@@ -285,7 +285,12 @@ config = {
     ],
     "vcs_output_timeout": 1000,
     "minidump_save_path": "%(abs_work_dir)s/../minidumps",
-    "structured_suites": ["reftest"],
+    "unstructured_flavors": {"xpcshell": [],
+                             "gtest": [],
+                             "mozmill": [],
+                             "cppunittest": [],
+                             "jittest": [],
+                             },
     "download_minidump_stackwalk": True,
     "minidump_stackwalk_path": "win32-minidump_stackwalk.exe",
     "minidump_tooltool_manifest_path": "config/tooltool-manifests/win32/releng.manifest",
diff --git a/testing/mozharness/scripts/desktop_unittest.py b/testing/mozharness/scripts/desktop_unittest.py
index c52ddf9de30f..979328df112a 100755
--- a/testing/mozharness/scripts/desktop_unittest.py
+++ b/testing/mozharness/scripts/desktop_unittest.py
@@ -493,7 +493,7 @@ class DesktopUnittest(TestingMixin, MercurialScript, MozbaseMixin,
     def structured_output(self, suite_category, flavor=None):
         unstructured_flavors = self.config.get('unstructured_flavors')
         if not unstructured_flavors:
-            return False
+            return True
         if suite_category not in unstructured_flavors:
             return True
         if not unstructured_flavors.get(suite_category) or \