diff --git a/grub-core/lib/arm64/setjmp.S b/grub-core/lib/arm64/setjmp.S
index eabfd99b2..ffcabf6e4 100644
--- a/grub-core/lib/arm64/setjmp.S
+++ b/grub-core/lib/arm64/setjmp.S
@@ -50,6 +50,7 @@ FUNCTION(grub_longjmp)
 	ldp	x29, x30, [x0], #16
 	ldr	x2, [x0]
 	mov	sp, x2
+	mov	x0, #1
 	cmp	x1, #0
 	csel	x0, x1, x0, ne
 	ret