diff --git a/core/include/nova64_internal.h b/core/include/nova64_internal.h
index ea3bbf7..87d3b19 100644
--- a/core/include/nova64_internal.h
+++ b/core/include/nova64_internal.h
@@ -1,7 +1,8 @@
 #ifndef NOVA64_INTERNAL_H
 #define NOVA64_INTERNAL_H
 
-#include "nova64_core.h"
+#include "nova64_io_interface.h"
+#include "nova64_ppu_interface.h"
 
 void nova64_log(const char *format, ...);