diff --git a/src/ims/in-memory-storage-lfu.hpp b/src/ims/in-memory-storage-lfu.hpp
index 7633cfd..ebc9711 100644
--- a/src/ims/in-memory-storage-lfu.hpp
+++ b/src/ims/in-memory-storage-lfu.hpp
@@ -43,7 +43,7 @@
   InMemoryStorageLfu(size_t limit = 10);
 
   explicit
-  InMemoryStorageLfu(boost::asio::io_service& ioService, size_t limit = 10);
+  InMemoryStorageLfu(DummyIoService& ioService, size_t limit = 10);
 
 NDN_CXX_PUBLIC_WITH_TESTS_ELSE_PROTECTED:
   /** @brief Removes one Data packet from in-memory storage based on LFU, i.e. evict the least