diff --git a/src/encoding/oid.hpp b/src/encoding/oid.hpp
index e755c05..308da8e 100644
--- a/src/encoding/oid.hpp
+++ b/src/encoding/oid.hpp
@@ -9,8 +9,7 @@
 #ifndef NDN_OID_HPP
 #define NDN_OID_HPP
 
-#include <vector>
-#include <string>
+#include "../common.hpp"
 
 namespace CryptoPP { class BufferedTransformation; }