diff --git a/intro_gui.c b/intro_gui.c
--- a/intro_gui.c
+++ b/intro_gui.c
@@ -199,7 +199,7 @@ static void AskAbandonGameWndProc(Window
 #elif defined(__MORPHOS__)
 		SetDParam(0, STR_OSNAME_MORPHOS);
 #elif defined(__AMIGA__) /* note: __AMIGA__ is defined under MorphOS too, so it must be after __MORPHOS__. */ 
-		SET_DPARAM16(0, STR_OSNAME_AMIGAOS);
+		SetDParam(0, STR_OSNAME_AMIGAOS);
 #else
 		SetDParam(0, STR_0134_UNIX);
 #endif