diff --git a/evm/src/cpu/kernel/keccak_util.rs b/evm/src/cpu/kernel/keccak_util.rs
index 18730075..e1cae7c2 100644
--- a/evm/src/cpu/kernel/keccak_util.rs
+++ b/evm/src/cpu/kernel/keccak_util.rs
@@ -32,24 +32,28 @@ pub(crate) fn keccakf_u8s(state_u8s: &mut [u8; KECCAK_WIDTH_BYTES]) {
 mod tests {
     use tiny_keccak::keccakf;
 
-    use crate::cpu::kernel::keccak_util::keccakf_u32s;
+    use crate::cpu::kernel::keccak_util::{keccakf_u32s, keccakf_u8s};
 
     #[test]
     #[rustfmt::skip]
     fn test_consistency() {
-        // We will hash the same data using keccakf and keccakf_u32s.
+        // We will hash the same data using keccakf, keccakf_u32s and keccakf_u8s.
         // The inputs were randomly generated in Python.
         let mut state_u64s: [u64; 25] = [0x5dc43ed05dc64048, 0x7bb9e18cdc853880, 0xc1fde300665b008f, 0xeeab85e089d5e431, 0xf7d61298e9ef27ea, 0xc2c5149d1a492455, 0x37a2f4eca0c2d2f2, 0xa35e50c015b3e85c, 0xd2daeced29446ebe, 0x245845f1bac1b98e, 0x3b3aa8783f30a9bf, 0x209ca9a81956d241, 0x8b8ea714da382165, 0x6063e67e202c6d29, 0xf4bac2ded136b907, 0xb17301b461eae65, 0xa91ff0e134ed747c, 0xcc080b28d0c20f1d, 0xf0f79cbec4fb551c, 0x25e04cb0aa930cad, 0x803113d1b541a202, 0xfaf1e4e7cd23b7ec, 0x36a03bbf2469d3b0, 0x25217341908cdfc0, 0xe9cd83f88fdcd500];
         let mut state_u32s: [u32; 50] = [0x5dc64048, 0x5dc43ed0, 0xdc853880, 0x7bb9e18c, 0x665b008f, 0xc1fde300, 0x89d5e431, 0xeeab85e0, 0xe9ef27ea, 0xf7d61298, 0x1a492455, 0xc2c5149d, 0xa0c2d2f2, 0x37a2f4ec, 0x15b3e85c, 0xa35e50c0, 0x29446ebe, 0xd2daeced, 0xbac1b98e, 0x245845f1, 0x3f30a9bf, 0x3b3aa878, 0x1956d241, 0x209ca9a8, 0xda382165, 0x8b8ea714, 0x202c6d29, 0x6063e67e, 0xd136b907, 0xf4bac2de, 0x461eae65, 0xb17301b, 0x34ed747c, 0xa91ff0e1, 0xd0c20f1d, 0xcc080b28, 0xc4fb551c, 0xf0f79cbe, 0xaa930cad, 0x25e04cb0, 0xb541a202, 0x803113d1, 0xcd23b7ec, 0xfaf1e4e7, 0x2469d3b0, 0x36a03bbf, 0x908cdfc0, 0x25217341, 0x8fdcd500, 0xe9cd83f8];
+        let mut state_u8s: [u8; 200] = [0x48, 0x40, 0xc6, 0x5d, 0xd0, 0x3e, 0xc4, 0x5d, 0x80, 0x38, 0x85, 0xdc, 0x8c, 0xe1, 0xb9, 0x7b, 0x8f, 0x0, 0x5b, 0x66, 0x0, 0xe3, 0xfd, 0xc1, 0x31, 0xe4, 0xd5, 0x89, 0xe0, 0x85, 0xab, 0xee, 0xea, 0x27, 0xef, 0xe9, 0x98, 0x12, 0xd6, 0xf7, 0x55, 0x24, 0x49, 0x1a, 0x9d, 0x14, 0xc5, 0xc2, 0xf2, 0xd2, 0xc2, 0xa0, 0xec, 0xf4, 0xa2, 0x37, 0x5c, 0xe8, 0xb3, 0x15, 0xc0, 0x50, 0x5e, 0xa3, 0xbe, 0x6e, 0x44, 0x29, 0xed, 0xec, 0xda, 0xd2, 0x8e, 0xb9, 0xc1, 0xba, 0xf1, 0x45, 0x58, 0x24, 0xbf, 0xa9, 0x30, 0x3f, 0x78, 0xa8, 0x3a, 0x3b, 0x41, 0xd2, 0x56, 0x19, 0xa8, 0xa9, 0x9c, 0x20, 0x65, 0x21, 0x38, 0xda, 0x14, 0xa7, 0x8e, 0x8b, 0x29, 0x6d, 0x2c, 0x20, 0x7e, 0xe6, 0x63, 0x60, 0x7, 0xb9, 0x36, 0xd1, 0xde, 0xc2, 0xba, 0xf4, 0x65, 0xae, 0x1e, 0x46, 0x1b, 0x30, 0x17, 0xb, 0x7c, 0x74, 0xed, 0x34, 0xe1, 0xf0, 0x1f, 0xa9, 0x1d, 0xf, 0xc2, 0xd0, 0x28, 0xb, 0x8, 0xcc, 0x1c, 0x55, 0xfb, 0xc4, 0xbe, 0x9c, 0xf7, 0xf0, 0xad, 0xc, 0x93, 0xaa, 0xb0, 0x4c, 0xe0, 0x25, 0x2, 0xa2, 0x41, 0xb5, 0xd1, 0x13, 0x31, 0x80, 0xec, 0xb7, 0x23, 0xcd, 0xe7, 0xe4, 0xf1, 0xfa, 0xb0, 0xd3, 0x69, 0x24, 0xbf, 0x3b, 0xa0, 0x36, 0xc0, 0xdf, 0x8c, 0x90, 0x41, 0x73, 0x21, 0x25, 0x0, 0xd5, 0xdc, 0x8f, 0xf8, 0x83, 0xcd, 0xe9];
 
-        // The first output was generated using tiny-keccak; the second was derived from it.
+        // The first output was generated using tiny-keccak; the others were derived from it.
         let out_u64s: [u64; 25] = [0x8a541df597e79a72, 0x5c26b8c84faaebb3, 0xc0e8f4e67ca50497, 0x95d98a688de12dec, 0x1c837163975ffaed, 0x9481ec7ef948900e, 0x6a072c65d050a9a1, 0x3b2817da6d615bee, 0x7ffb3c4f8b94bf21, 0x85d6c418cced4a11, 0x18edbe0442884135, 0x2bf265ef3204b7fd, 0xc1e12ce30630d105, 0x8c554dbc61844574, 0x5504db652ce9e42c, 0x2217f3294d0dabe5, 0x7df8eebbcf5b74df, 0x3a56ebb61956f501, 0x7840219dc6f37cc, 0x23194159c967947, 0x9da289bf616ba14d, 0x5a90aaeeca9e9e5b, 0x885dcdc4a549b4e3, 0x46cb188c20947df7, 0x1ef285948ee3d8ab];
         let out_u32s: [u32; 50] = [0x97e79a72, 0x8a541df5, 0x4faaebb3, 0x5c26b8c8, 0x7ca50497, 0xc0e8f4e6, 0x8de12dec, 0x95d98a68, 0x975ffaed, 0x1c837163, 0xf948900e, 0x9481ec7e, 0xd050a9a1, 0x6a072c65, 0x6d615bee, 0x3b2817da, 0x8b94bf21, 0x7ffb3c4f, 0xcced4a11, 0x85d6c418, 0x42884135, 0x18edbe04, 0x3204b7fd, 0x2bf265ef, 0x630d105, 0xc1e12ce3, 0x61844574, 0x8c554dbc, 0x2ce9e42c, 0x5504db65, 0x4d0dabe5, 0x2217f329, 0xcf5b74df, 0x7df8eebb, 0x1956f501, 0x3a56ebb6, 0xdc6f37cc, 0x7840219, 0x9c967947, 0x2319415, 0x616ba14d, 0x9da289bf, 0xca9e9e5b, 0x5a90aaee, 0xa549b4e3, 0x885dcdc4, 0x20947df7, 0x46cb188c, 0x8ee3d8ab, 0x1ef28594];
+        let out_u8s: [u8; 200] = [0x72, 0x9a, 0xe7, 0x97, 0xf5, 0x1d, 0x54, 0x8a, 0xb3, 0xeb, 0xaa, 0x4f, 0xc8, 0xb8, 0x26, 0x5c, 0x97, 0x4, 0xa5, 0x7c, 0xe6, 0xf4, 0xe8, 0xc0, 0xec, 0x2d, 0xe1, 0x8d, 0x68, 0x8a, 0xd9, 0x95, 0xed, 0xfa, 0x5f, 0x97, 0x63, 0x71, 0x83, 0x1c, 0xe, 0x90, 0x48, 0xf9, 0x7e, 0xec, 0x81, 0x94, 0xa1, 0xa9, 0x50, 0xd0, 0x65, 0x2c, 0x7, 0x6a, 0xee, 0x5b, 0x61, 0x6d, 0xda, 0x17, 0x28, 0x3b, 0x21, 0xbf, 0x94, 0x8b, 0x4f, 0x3c, 0xfb, 0x7f, 0x11, 0x4a, 0xed, 0xcc, 0x18, 0xc4, 0xd6, 0x85, 0x35, 0x41, 0x88, 0x42, 0x4, 0xbe, 0xed, 0x18, 0xfd, 0xb7, 0x4, 0x32, 0xef, 0x65, 0xf2, 0x2b, 0x5, 0xd1, 0x30, 0x6, 0xe3, 0x2c, 0xe1, 0xc1, 0x74, 0x45, 0x84, 0x61, 0xbc, 0x4d, 0x55, 0x8c, 0x2c, 0xe4, 0xe9, 0x2c, 0x65, 0xdb, 0x4, 0x55, 0xe5, 0xab, 0xd, 0x4d, 0x29, 0xf3, 0x17, 0x22, 0xdf, 0x74, 0x5b, 0xcf, 0xbb, 0xee, 0xf8, 0x7d, 0x1, 0xf5, 0x56, 0x19, 0xb6, 0xeb, 0x56, 0x3a, 0xcc, 0x37, 0x6f, 0xdc, 0x19, 0x2, 0x84, 0x7, 0x47, 0x79, 0x96, 0x9c, 0x15, 0x94, 0x31, 0x2, 0x4d, 0xa1, 0x6b, 0x61, 0xbf, 0x89, 0xa2, 0x9d, 0x5b, 0x9e, 0x9e, 0xca, 0xee, 0xaa, 0x90, 0x5a, 0xe3, 0xb4, 0x49, 0xa5, 0xc4, 0xcd, 0x5d, 0x88, 0xf7, 0x7d, 0x94, 0x20, 0x8c, 0x18, 0xcb, 0x46, 0xab, 0xd8, 0xe3, 0x8e, 0x94, 0x85, 0xf2, 0x1e];
 
         keccakf(&mut state_u64s);
         keccakf_u32s(&mut state_u32s);
+        keccakf_u8s(&mut state_u8s);
 
         assert_eq!(state_u64s, out_u64s);
         assert_eq!(state_u32s, out_u32s);
+        assert_eq!(state_u8s, out_u8s);
     }
 }