diff --git a/tests/eval/ooo_wb/ooo_wb.S b/tests/eval/ooo_wb/ooo_wb.S
index 4f1f4a884..fb530d2e2 100644
--- a/tests/eval/ooo_wb/ooo_wb.S
+++ b/tests/eval/ooo_wb/ooo_wb.S
@@ -6,7 +6,7 @@ test:
     la t1, test_src_start  # t1 = addr
     la t2, test_src_end
     sub t2, t2, t1  # t2 = remaining length
-    xor t3, t3, t3  # t3 = sum
+    li t3, 0        # t3 = sum
 loop_start:
     vsetvli t0, t2, e8, m8, ta, ma   # t0 = vl
     vle8.v v8, (t1)