diff --git a/aos/util/options.h b/aos/util/options.h
index 39f7e8f..f393030 100644
--- a/aos/util/options.h
+++ b/aos/util/options.h
@@ -87,6 +87,6 @@
   friend class Option;
 };
 
-}  // namespace options
+}  // namespace aos
 
 #endif  // AOS_UTIL_OPTIONS_H_