diff --git a/src/util/crypto.cpp b/src/util/crypto.cpp
index 29cbe9d..6e559dd 100644
--- a/src/util/crypto.cpp
+++ b/src/util/crypto.cpp
@@ -13,6 +13,7 @@
 #include "../common.hpp"
 
 #include "crypto.hpp"
+#include "../encoding/buffer-stream.hpp"
 #include "../security/cryptopp.hpp"
 
 namespace ndn {