diff --git a/services/sync/tests/unit/test_fault_tolerance.js b/services/sync/tests/unit/test_fault_tolerance.js
index db380894c90b..b7dbe57edcbf 100644
--- a/services/sync/tests/unit/test_fault_tolerance.js
+++ b/services/sync/tests/unit/test_fault_tolerance.js
@@ -11,4 +11,5 @@ function run_test() {
   var log = Log4Moz.Service.rootLogger;
   log.level = Log4Moz.Level.All;
   log.info("Testing.");
+  do_check_eq(Log4Moz.Service.rootLogger.appenders.length, 1);
 }