diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 0096a53d03daac62552c712dfe47f8a64e590184..ad9320347a28493b5e529e5925fc05f464af60c8 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2205,7 +2205,7 @@ static void __init prom_check_displays(void)
 	ihandle ih;
 	int i;
 
-	static unsigned char default_colors[] = {
+	static const unsigned char default_colors[] = {
 		0x00, 0x00, 0x00,
 		0x00, 0x00, 0xaa,
 		0x00, 0xaa, 0x00,