diff --git a/stand/powerpc/boot1.chrp/boot1.c b/stand/powerpc/boot1.chrp/boot1.c
index ed7c55d11d6..2423b568055 100644
--- a/stand/powerpc/boot1.chrp/boot1.c
+++ b/stand/powerpc/boot1.chrp/boot1.c
@@ -58,7 +58,7 @@ static void exit(int) __dead2;
 static void load(const char *);
 static int dskread(void *, uint64_t, int);
 
-static void usage(void);
+static void usage(void) __dead2;
 
 static void bcopy(const void *src, void *dst, size_t len);
 static void bzero(void *b, size_t len);