diff --git a/wifi/1.0/default/hidl_callback_util.h b/wifi/1.0/default/hidl_callback_util.h
index 7136279..b7100c8 100644
--- a/wifi/1.0/default/hidl_callback_util.h
+++ b/wifi/1.0/default/hidl_callback_util.h
@@ -82,7 +82,7 @@
     return true;
   }
 
-  const std::set<android::sp<CallbackType>> getCallbacks() { return cb_set_; }
+  const std::set<android::sp<CallbackType>>& getCallbacks() { return cb_set_; }
 
   // Death notification for callbacks.
   void onObjectDeath(uint64_t cookie) {