diff --git a/query-result.hh b/query-result.hh
index c542868553..e83c3d1b3f 100644
--- a/query-result.hh
+++ b/query-result.hh
@@ -7,6 +7,7 @@
 #define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
 #include <cryptopp/md5.h>
 #include "bytes_ostream.hh"
+#include "query-request.hh"
 
 namespace query {