diff --git a/evm/src/cpu/kernel/opcodes.rs b/evm/src/cpu/kernel/opcodes.rs
index b8633178..6ca359b7 100644
--- a/evm/src/cpu/kernel/opcodes.rs
+++ b/evm/src/cpu/kernel/opcodes.rs
@@ -35,6 +35,7 @@ pub(crate) fn get_opcode(mnemonic: &str) -> u8 {
         "SHR" => 0x1c,
         "SAR" => 0x1d,
         "KECCAK256" => 0x20,
+        "SHA3" => 0x20,
         "ADDRESS" => 0x30,
         "BALANCE" => 0x31,
         "ORIGIN" => 0x32,
diff --git a/evm/src/cpu/kernel/tests/ecrecover.rs b/evm/src/cpu/kernel/tests/ecrecover.rs
index 5077d042..80257222 100644
--- a/evm/src/cpu/kernel/tests/ecrecover.rs
+++ b/evm/src/cpu/kernel/tests/ecrecover.rs
@@ -1,20 +1,13 @@
+use std::str::FromStr;
+
 use anyhow::Result;
 use ethereum_types::U256;
-use keccak_hash::keccak;
 
 use crate::cpu::kernel::aggregator::combined_kernel;
 use crate::cpu::kernel::assembler::Kernel;
 use crate::cpu::kernel::interpreter::run;
 use crate::cpu::kernel::tests::u256ify;
 
-fn pubkey_to_addr(x: U256, y: U256) -> Vec<u8> {
-    let mut buf = [0; 64];
-    x.to_big_endian(&mut buf[0..32]);
-    y.to_big_endian(&mut buf[32..64]);
-    let hash = keccak(buf);
-    hash.0[12..].to_vec()
-}
-
 fn test_valid_ecrecover(
     hash: &str,
     v: &str,
@@ -24,10 +17,9 @@ fn test_valid_ecrecover(
     kernel: &Kernel,
 ) -> Result<()> {
     let ecrecover = kernel.global_labels["ecrecover"];
-    let initial_stack = u256ify([s, r, v, hash])?;
+    let initial_stack = u256ify(["0xdeadbeef", s, r, v, hash])?;
     let stack = run(&kernel.code, ecrecover, initial_stack).stack;
-    let got = pubkey_to_addr(stack[1], stack[0]);
-    assert_eq!(got, hex::decode(&expected[2..]).unwrap());
+    assert_eq!(stack[0], U256::from_str(expected).unwrap());
 
     Ok(())
 }