diff --git a/AES.hpp b/AES.hpp
index 0ff6c98..13cd5c0 100644
--- a/AES.hpp
+++ b/AES.hpp
@@ -410,7 +410,7 @@ namespace Cipher {
       {11, 13, 9, 14},
     };
 
-    void sub_bytes(unsigned char state[AES_BLOCK]) {
+    void sub_bytes(unsigned char state[AES_BLOCK]) noexcept {
       for (size_t i = 0; i < AES_BLOCK; i += 4) {
         state[i] = sbox[state[i]];
         state[i + 1] = sbox[state[i + 1]];
@@ -419,7 +419,7 @@ namespace Cipher {
       }
     }
 
-    void inverse_sub_bytes(unsigned char state[AES_BLOCK]) {
+    void inverse_sub_bytes(unsigned char state[AES_BLOCK]) noexcept {
       for (size_t i = 0; i < AES_BLOCK; i += 4) {
         state[i] = inverse_sbox[state[i]];
         state[i + 1] = inverse_sbox[state[i + 1]];
@@ -428,7 +428,7 @@ namespace Cipher {
       }
     }
 
-    void shift_rows(unsigned char state[AES_BLOCK]) {
+    void shift_rows(unsigned char state[AES_BLOCK]) noexcept {
       unsigned char temp = state[4];
 
       state[4] = state[5];
@@ -450,7 +450,7 @@ namespace Cipher {
       state[13] = temp;
     }
 
-    void inverse_shift_rows(unsigned char state[AES_BLOCK]) {
+    void inverse_shift_rows(unsigned char state[AES_BLOCK]) noexcept {
       unsigned char temp = state[4];
 
       state[4] = state[7];
@@ -472,7 +472,7 @@ namespace Cipher {
       state[15] = temp;
     }
 
-    void mix_columns(unsigned char state[AES_BLOCK]) {
+    void mix_columns(unsigned char state[AES_BLOCK]) noexcept {
       unsigned char gf_product[AES_BLOCK] = {};
 
       // TODO: analyse in the future if this loop can speed up by branchless programming.
@@ -493,7 +493,7 @@ namespace Cipher {
       }
     }
 
-    void inverse_mix_columns(unsigned char state[AES_BLOCK]) {
+    void inverse_mix_columns(unsigned char state[AES_BLOCK]) noexcept {
       unsigned char gf_product[AES_BLOCK] = {};
 
       for (size_t i = 0; i < 4; ++i) {
diff --git a/microbench.cpp b/microbench.cpp
index 9bd7668..45d3c85 100644
--- a/microbench.cpp
+++ b/microbench.cpp
@@ -44,7 +44,7 @@ int main() {
     auto enc_end = std::chrono::high_resolution_clock::now();
     auto enc_dur = std::chrono::duration_cast<std::chrono::milliseconds>(enc_end - enc_start);
 
-    std::cout << "| Encryption | " << KEY_BIT_SIZE << " | " << enc_dur.count() << "ms | " << (MB / 1024) / 1024 << "\n";
+    std::cout << "| Encryption | " << KEY_BIT_SIZE << " | " << enc_dur.count() << "ms | " << (MB / 1024) / 1024 << "|\n";
     
     auto dec_start = std::chrono::high_resolution_clock::now();
     for (size_t i = 0; i < MB; i += 16) {
@@ -53,7 +53,7 @@ int main() {
     auto dec_end = std::chrono::high_resolution_clock::now();
     auto dec_dur = std::chrono::duration_cast<std::chrono::milliseconds>(dec_end - dec_start);
 
-    std::cout << "| Decryption | " << KEY_BIT_SIZE << " | " << dec_dur.count() << "ms | " << (MB / 1024) / 1024 << "\n";
+    std::cout << "| Decryption | " << KEY_BIT_SIZE << " | " << dec_dur.count() << "ms | " << (MB / 1024) / 1024 << "|\n";
 
     int result = std::memcmp(data, save, MB);
     // std::cout << "\n\nresult = " << result << "\n\n";