diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index 83990db82f744eac9d8fc8a1ab08bb0e428394f6..cfbb60a5f9d2c271db2b32309793fd0e7010acac 100644
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -251,11 +251,7 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	err |= __put_user(me->sas_ss_size, &frame->uc.uc_stack.ss_size);
 	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0], me);
 	err |= __put_user(fp, &frame->uc.uc_mcontext.fpstate);
-	if (sizeof(*set) == 16) {
-		__put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]);
-		__put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]);
-	} else
-		err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
 
 	/* Set up to return from userspace.  If provided, use a stub
 	   already in userspace.  */