diff --git a/sys/src/9/pc/l.s b/sys/src/9/pc/l.s
index 44071a634..0d28ab2f1 100644
--- a/sys/src/9/pc/l.s
+++ b/sys/src/9/pc/l.s
@@ -186,6 +186,9 @@ TEXT mode32bit(SB), $0
 
 	MOVL	$PADDR(CPU0PTE), AX		/* first page of page table */
 	MOVL	$end-KZERO(SB), CX
+
+	ADDL	$(16*1024), CX			/* qemu puts multiboot data after the kernel */
+
 	ADDL	$(BY2XPG-1), CX
 	ANDL	$~(BY2XPG-1), CX		/* round to 4MB */
 	MOVL	CX, MemMin-KZERO(SB)		/* see memory.c */
diff --git a/sys/src/9/pc64/l.s b/sys/src/9/pc64/l.s
index 94356a9fb..6736ec42b 100644
--- a/sys/src/9/pc64/l.s
+++ b/sys/src/9/pc64/l.s
@@ -149,6 +149,9 @@ TEXT _warp64<>(SB), 1, $-4
 	 */
 	ADDL	$PDO(KZERO), AX
 	MOVL	$end-KZERO(SB), CX
+
+	ADDL	$(16*1024), CX			/* qemu puts multiboot data after the kernel */
+
 	ADDL	$(PGLSZ(1)-1), CX
 	ANDL	$~(PGLSZ(1)-1), CX
 	MOVL	CX, MemMin-KZERO(SB)		/* see memory.c */