diff --git a/d1x-rebirth/arch/include/messagebox.h b/common/include/messagebox.h
similarity index 100%
rename from d1x-rebirth/arch/include/messagebox.h
rename to common/include/messagebox.h
diff --git a/d2x-rebirth/arch/include/messagebox.h b/d2x-rebirth/arch/include/messagebox.h
deleted file mode 100644
index 27a7d8006..000000000
--- a/d2x-rebirth/arch/include/messagebox.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- *  messagebox.h
- *  d1x-rebirth
- *
- *  Display an error or warning messagebox using the OS's window server.
- *
- */
-
-#ifndef _MESSAGEBOX_H
-#define _MESSAGEBOX_H
-
-// Display a warning in a messagebox
-extern void msgbox_warning(char *message);
-
-// Display an error in a messagebox
-extern void msgbox_error(char *message);
-
-#endif