diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index f1cacd4897f7..3a058bb16409 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -988,7 +988,7 @@ child_rip:
 	movq %rsi, %rdi
 	call *%rax
 	# exit
-	xorl %edi, %edi
+	mov %eax, %edi
 	call do_exit
 	CFI_ENDPROC
 ENDPROC(child_rip)