diff --git a/tests/ctr.test.ts b/tests/ctr.test.ts
index af0c858..20a671a 100644
--- a/tests/ctr.test.ts
+++ b/tests/ctr.test.ts
@@ -284,19 +284,19 @@ describe("GenerateCounterBlocks", async () => {
           [
             [0xf0, 0xf4, 0xf8, 0xfc],
             [0xf1, 0xf5, 0xf9, 0xfd],
-            [0xf2, 0xf6, 0xfa, 0xfe],
+            [0xf2, 0xf6, 0xfa, 0xff],
             [0xf3, 0xf7, 0xfb, 0x00],
           ],
           [
             [0xf0, 0xf4, 0xf8, 0xfc],
             [0xf1, 0xf5, 0xf9, 0xfd],
-            [0xf2, 0xf6, 0xfa, 0xfe],
+            [0xf2, 0xf6, 0xfa, 0xff],
             [0xf3, 0xf7, 0xfb, 0x01],
           ],
           [
             [0xf0, 0xf4, 0xf8, 0xfc],
             [0xf1, 0xf5, 0xf9, 0xfd],
-            [0xf2, 0xf6, 0xfa, 0xfe],
+            [0xf2, 0xf6, 0xfa, 0xff],
             [0xf3, 0xf7, 0xfb, 0x02],
           ],
         ],