diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c
index 7aad6203e411..9ac5f3aad5e8 100644
--- a/arch/powerpc/kernel/udbg.c
+++ b/arch/powerpc/kernel/udbg.c
@@ -155,7 +155,7 @@ static struct console udbg_console = {
 	.name	= "udbg",
 	.write	= udbg_console_write,
 	.flags	= CON_PRINTBUFFER | CON_ENABLED | CON_BOOT,
-	.index	= -1,
+	.index	= 0,
 };
 
 static int early_console_initialized;