diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 0697ff1..4db7c4d 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -571,8 +571,8 @@
 	 * masked off.
 	 */
 sysret_audit:
-	movq %rax,%rsi		/* second arg, syscall return value */
-	cmpq $0,%rax		/* is it < 0? */
+	movq RAX-ARGOFFSET(%rsp),%rsi	/* second arg, syscall return value */
+	cmpq $0,%rsi		/* is it < 0? */
 	setl %al		/* 1 if so, 0 if not */
 	movzbl %al,%edi		/* zero-extend that into %edi */
 	inc %edi /* first arg, 0->1(AUDITSC_SUCCESS), 1->2(AUDITSC_FAILURE) */