diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index 339e041e8dda4647fb95b49edb145480530e580e..8aad3c55aeda2885e331b8c7ebd52436c219e74b 100644
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -15,7 +15,7 @@
 #include "types.h"
 #include "string.h"
 
-#define	BOOT_COMMAND_LINE_SIZE	512
+#define	BOOT_COMMAND_LINE_SIZE	2048
 #define	MAX_PATH_LEN		256
 #define	MAX_PROP_LEN		256 /* What should this be? */