diff --git a/src/arch/i386/prefix/lkrnprefix.S b/src/arch/i386/prefix/lkrnprefix.S
index f87ef85a..338ffa3d 100644
--- a/src/arch/i386/prefix/lkrnprefix.S
+++ b/src/arch/i386/prefix/lkrnprefix.S
@@ -160,7 +160,7 @@ relocatable_kernel:
 pad2:
 	.byte	0, 0, 0
 cmdline_size:
-	.long	0
+	.long	0x7ff
 hardware_subarch:
 	.long	0
 hardware_subarch_data: