diff --git a/CMakeLists.txt b/CMakeLists.txt
index d061c945..e0a09958 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -55,7 +55,7 @@ add_executable(uking
   src/KingSystem/Resource/resResource.cpp
   src/KingSystem/Resource/resResource.h
   src/KingSystem/Resource/resResourceDemo.cpp
-  src/KingSystem/Resource/resResourceDemo.cpp
+  src/KingSystem/Resource/resResourceDemo.h
   src/KingSystem/Resource/resResourceLod.cpp
   src/KingSystem/Resource/resResourceLod.h
 
diff --git a/src/KingSystem/Resource/resResourceDemo.h b/src/KingSystem/Resource/resResourceDemo.h
index b41615b2..68d02b22 100644
--- a/src/KingSystem/Resource/resResourceDemo.h
+++ b/src/KingSystem/Resource/resResourceDemo.h
@@ -4,6 +4,7 @@
 #include <agl/Utils/aglParameterIO.h>
 #include <agl/Utils/aglParameterObj.h>
 #include <resource/seadResource.h>
+#include "KingSystem/Utils/Types.h"
 
 namespace ksys::res {
 
@@ -81,5 +82,6 @@ public:
     agl::utl::Parameter<f32> mTraverseInnerCutRadius2;
     agl::utl::Parameter<s32> mDisableTraverseTime;
 };
+KSYS_CHECK_SIZE_NX150(Demo, 0xb20);
 
 }  // namespace ksys::res