diff --git a/testing/mochitest/runtests.py b/testing/mochitest/runtests.py
index e33193e6849..d1392ec81e5 100644
--- a/testing/mochitest/runtests.py
+++ b/testing/mochitest/runtests.py
@@ -2099,9 +2099,7 @@ class Mochitest(MochitestUtilsMixin):
     if "MOZ_HIDE_RESULTS_TABLE" in os.environ and os.environ["MOZ_HIDE_RESULTS_TABLE"] == "1":
       options.hideResultsTable = True
 
-    d = dict((k, v) for k, v in options.__dict__.items() if
-        (not k.startswith('log_') or
-         not any([k.endswith(fmt) for fmt in commandline.log_formatters.keys()])))
+    d = dict((k, v) for k, v in options.__dict__.iteritems() if not k.startswith('log'))
     d['testRoot'] = self.testRoot
     content = json.dumps(d)