diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index d60ad23..890a591 100644
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -149,7 +149,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
 	if (restore_sigframe(regs, frame))
 		goto badframe;
 
-	if (restore_altstack(frame->uc.uc_stack))
+	if (restore_altstack(&frame->uc.uc_stack))
 		goto badframe;
 
 	return regs->regs[0];