diff --git a/test/helpers/count.hpp b/test/helpers/count.hpp
index dfb34e61..69004dcf 100644
--- a/test/helpers/count.hpp
+++ b/test/helpers/count.hpp
@@ -6,6 +6,7 @@
 #if !defined(BOOST_UNORDERED_TEST_HELPERS_COUNT_HEAD)
 #define BOOST_UNORDERED_TEST_HELPERS_COUNT_HEAD
 
+#include <boost/detail/lightweight_test.hpp>
 #include <iostream>
 
 namespace test {