diff --git a/generator/regions/to_string_policy.cpp b/generator/regions/to_string_policy.cpp
index 950dbd4e56..a9203aade6 100644
--- a/generator/regions/to_string_policy.cpp
+++ b/generator/regions/to_string_policy.cpp
@@ -6,7 +6,6 @@
 #include <memory>
 
 #include <boost/optional.hpp>
-#include <boost/range/adaptor/reversed.hpp>
 
 #include "3party/jansson/myjansson.hpp"