diff --git a/include/coreinit/copydata.h b/include/coreinit/copydata.h
new file mode 100644
index 00000000..3137b500
--- /dev/null
+++ b/include/coreinit/copydata.h
@@ -0,0 +1,35 @@
+#pragma once
+#include <wut.h>
+
+/**
+ * \defgroup coreinit_copydata CopyData
+ * \ingroup coreinit
+ *
+ * @{
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void
+__OSClearCopyData();
+
+BOOL
+__OSAppendCopyData(const void *data,
+                   uint32_t size);
+
+void *
+__OSGetCopyDataPtr();
+
+uint32_t
+__OSGetCopyDataSize();
+
+BOOL
+__OSResizeCopyData(uint32_t size);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
diff --git a/tests/test_compile_headers_common/test_compile_headers_list.h b/tests/test_compile_headers_common/test_compile_headers_list.h
index 14e740c0..de5e1d9f 100644
--- a/tests/test_compile_headers_common/test_compile_headers_list.h
+++ b/tests/test_compile_headers_common/test_compile_headers_list.h
@@ -7,6 +7,7 @@
 #include <coreinit/codegen.h>
 #include <coreinit/condition.h>
 #include <coreinit/context.h>
+#include <coreinit/copydata.h>
 #include <coreinit/core.h>
 #include <coreinit/coroutine.h>
 #include <coreinit/cosreport.h>