--- /dev/null
+diff --git a/include/valijson/internal/optional.hpp b/include/valijson/internal/optional.hpp
+index 8ff285c..84e9fd6 100644
+--- a/include/valijson/internal/optional.hpp
++++ b/include/valijson/internal/optional.hpp
+@@ -11,7 +11,7 @@ namespace opt = std;
+ # endif
+ # endif
+ #else
+-# include <compat/optional.hpp>
++# include <valijson/compat/optional.hpp>
+ namespace opt = std::experimental;
+ #endif
+