diff --git a/src/name-component.hpp b/src/name-component.hpp
index b83dd40..d58e4d6 100644
--- a/src/name-component.hpp
+++ b/src/name-component.hpp
@@ -19,6 +19,7 @@
 
 #include "common.hpp"
 #include "encoding/block.hpp"
+#include "encoding/block-helpers.hpp"
 #include "encoding/encoding-buffer.hpp"
 #include "util/string-helper.hpp"