diff --git a/libs/surfaces/websockets/typed_value.h b/libs/surfaces/websockets/typed_value.h
index f24a960e18..aad94c0ca9 100644
--- a/libs/surfaces/websockets/typed_value.h
+++ b/libs/surfaces/websockets/typed_value.h
@@ -16,11 +16,11 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include <string>
-
 #ifndef _ardour_surface_websockets_typed_value_h_
 #define _ardour_surface_websockets_typed_value_h_
 
+#include <string>
+
 namespace ArdourSurface {
 
 class TypedValue