diff --git a/test/test.S b/test/test.S
index cc9364b..0f4177e 100644
--- a/test/test.S
+++ b/test/test.S
@@ -315,7 +315,7 @@ done:
     slli    x30, x30, 8         # x31 = 0x00ffff00
     addi    x30, x30, 0xff      # x31 = 0x00ffffff
     slli    x30, x30, 8         # x31 = 0xffffff00
-    addi    x30, x30, 0xff      # x31 = 0xfffffffe
+    addi    x30, x30, 0xfe      # x31 = 0xffffffff
     nop
     nop
     nop