diff --git a/aes/aes.cpp b/aes/aes.cpp
index c388c64..e1379bb 100644
--- a/aes/aes.cpp
+++ b/aes/aes.cpp
@@ -315,7 +315,7 @@ int main(int argc, char* argv[])
         // test  AddRoundKey (last round)
         t_state state = { 0x01234567, 0x89abcdef, 0xdeadbeef, 0x00112233 };
         t_state res_state = { 0xb46d152d, 0x45e164c3, 0xa7cab335, 0x910eed36 };
-        addRoundKey(state, key_w, 10);
+        addRoundKey(state, key_w, 40);
         printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n", state[0], state[1], state[2], state[3]);
         for (int i = 0; i < 4; i++) {
             if (state[i] != res_state[i]) { printf("Mismatch at state[%d]!\n", i); }