diff --git a/tests/test-interest.cpp b/tests/test-interest.cpp
index 10f88d6..54efad4 100644
--- a/tests/test-interest.cpp
+++ b/tests/test-interest.cpp
@@ -14,6 +14,7 @@
 #include "data.hpp"
 #include "security/signature-sha256-with-rsa.hpp"
 #include "security/signature-sha256.hpp"
+#include "encoding/buffer-stream.hpp"
 
 #include "boost-test.hpp"