diff --git a/include/xo/unit/mpl/detail/promoter.hpp b/include/xo/unit/mpl/detail/promoter.hpp
index d3b4b4ad..3e85324a 100644
--- a/include/xo/unit/mpl/detail/promoter.hpp
+++ b/include/xo/unit/mpl/detail/promoter.hpp
@@ -5,7 +5,7 @@
 
 #pragma once
 
-#include "mpl/unit.hpp"
+#include "../unit.hpp"
 
 namespace xo {
     namespace unit {