diff --git a/moz.build b/moz.build
index 2421088ca33a65108bb0e543988d90ad340f966d..edb9d4f6542520ff76ef28ea5d44f3f225c93121 100644
--- a/moz.build
+++ b/moz.build
@@ -22,6 +22,7 @@ DIRS += [
     'config',
     'python',
     'taskcluster',
+    'testing/mozbase',
 ]
 
 if not CONFIG['JS_STANDALONE']:
diff --git a/toolkit/toolkit.mozbuild b/toolkit/toolkit.mozbuild
index 0569a1452475e51f61c22755d5349f51be83b33d..023596f306c1d3cce23d5e031df1390ff116dc7f 100644
--- a/toolkit/toolkit.mozbuild
+++ b/toolkit/toolkit.mozbuild
@@ -176,7 +176,6 @@ if CONFIG['ENABLE_TESTS']:
         '/testing/tools/minidumpwriter',
         '/testing/tools/screenshot',
         '/testing/profiles',
-        '/testing/mozbase',
         '/testing/modules',
         '/testing/runtimes',
         '/testing/web-platform',