diff --git a/include/nn/ui2d/Types.h b/include/nn/ui2d/Types.h
index 5ee686d..0f11cba 100644
--- a/include/nn/ui2d/Types.h
+++ b/include/nn/ui2d/Types.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <nn/types.h>
+
 namespace nn::ui2d {
 
 enum PaneFlag {