diff --git a/include/sol/usertype_storage.hpp b/include/sol/usertype_storage.hpp
index 9421d65a..6902e80b 100644
--- a/include/sol/usertype_storage.hpp
+++ b/include/sol/usertype_storage.hpp
@@ -21,8 +21,8 @@
 // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-#ifndef SOL_EXPERIMENTAL_USERTYPE_HPP
-#define SOL_EXPERIMENTAL_USERTYPE_HPP
+#ifndef SOL_USERTYPE_STORAGE_HPP
+#define SOL_USERTYPE_STORAGE_HPP
 
 #include "usertype_core.hpp"
 #include "make_reference.hpp"
@@ -789,4 +789,4 @@ namespace u_detail {
 
 } // namespace sol::u_detail
 
-#endif SOL_EXPERIMENTAL_USERTYPE_HPP
+#endif SOL_USERTYPE_STORAGE_HPP