diff --git a/src/util/regex/regex-component-set-matcher.hpp b/src/util/regex/regex-component-set-matcher.hpp
index 8e0e908..6bccffe 100644
--- a/src/util/regex/regex-component-set-matcher.hpp
+++ b/src/util/regex/regex-component-set-matcher.hpp
@@ -20,6 +20,8 @@
 #include "regex-matcher.hpp"
 #include "regex-component-matcher.hpp"
 
+#include <set>
+
 namespace ndn {
 
 class RegexComponentSetMatcher : public RegexMatcher