diff --git a/ndn-handle/read-handle.hpp b/ndn-handle/read-handle.hpp
index 9f86c55..2e13b43 100644
--- a/ndn-handle/read-handle.hpp
+++ b/ndn-handle/read-handle.hpp
@@ -28,7 +28,7 @@
 {
 
 public:
-  ReadHandle(Face& face, StorageHandle& storageHandle, KeyChain keyChain, Scheduler& scheduler)
+  ReadHandle(Face& face, StorageHandle& storageHandle, KeyChain& keyChain, Scheduler& scheduler)
     : BaseHandle(face, storageHandle, keyChain, scheduler)
   {
   }