diff --git a/include/boost/url/grammar/variant_rule.hpp b/include/boost/url/grammar/variant_rule.hpp
index a4765a43c..4a47d5b5c 100644
--- a/include/boost/url/grammar/variant_rule.hpp
+++ b/include/boost/url/grammar/variant_rule.hpp
@@ -79,7 +79,7 @@ template<
 class variant_rule_t
 {
 public:
-    using value_type = variant<
+    using value_type = variant2::variant<
         typename R0::value_type,
         typename Rn::value_type...>;