diff --git a/test/hash_string_test2.cpp b/test/hash_string_test2.cpp
index abca666..4dc67d9 100644
--- a/test/hash_string_test2.cpp
+++ b/test/hash_string_test2.cpp
@@ -2,8 +2,9 @@
 // Distributed under the Boost Software License, Version 1.0.
 // https://www.boost.org/LICENSE_1_0.txt
 
-#include <boost/container_hash/hash.hpp>
 #include <boost/utility/string_view.hpp>
+#include <boost/core/detail/string_view.hpp>
+#include <boost/container_hash/hash.hpp>
 #include <boost/core/lightweight_test.hpp>
 #include <boost/config.hpp>
 #include <string>
@@ -25,6 +26,7 @@ int main()
     std::string s( "Test." );
 
     BOOST_TEST_EQ( hv( s ), hv( boost::string_view( s ) ) );
+    BOOST_TEST_EQ( hv( s ), hv( boost::core::string_view( s ) ) );
 
 #if !defined(BOOST_NO_CXX17_HDR_STRING_VIEW)
     BOOST_TEST_EQ( hv( s ), hv( std::string_view( s ) ) );