diff --git a/evm/src/cpu/kernel/aggregator.rs b/evm/src/cpu/kernel/aggregator.rs
index 9c5b944f..a7c01cec 100644
--- a/evm/src/cpu/kernel/aggregator.rs
+++ b/evm/src/cpu/kernel/aggregator.rs
@@ -84,14 +84,6 @@ pub(crate) fn combined_kernel() -> Kernel {
         include_str!("asm/mpt/storage/storage_read.asm"),
         include_str!("asm/mpt/storage/storage_write.asm"),
         include_str!("asm/mpt/util.asm"),
-        include_str!("asm/ripemd/box.asm"),
-        include_str!("asm/ripemd/compression.asm"),
-        include_str!("asm/ripemd/constants.asm"),
-        include_str!("asm/ripemd/functions.asm"),
-        include_str!("asm/ripemd/main.asm"),
-        include_str!("asm/ripemd/memory.asm"),
-        include_str!("asm/ripemd/update.asm"),
-        include_str!("asm/rlp/encode.asm"),
         include_str!("asm/rlp/decode.asm"),
         include_str!("asm/rlp/encode.asm"),
         include_str!("asm/rlp/encode_rlp_string.asm"),
diff --git a/evm/src/cpu/kernel/constants/mod.rs b/evm/src/cpu/kernel/constants/mod.rs
index 24c8ae6d..ef97ff5a 100644
--- a/evm/src/cpu/kernel/constants/mod.rs
+++ b/evm/src/cpu/kernel/constants/mod.rs
@@ -19,9 +19,8 @@ pub(crate) mod txn_fields;
 pub fn evm_constants() -> HashMap<String, U256> {
     let mut c = HashMap::new();
 
-    let hex_constants = MISC_CONSTANTS
+    let hex_constants = EC_CONSTANTS
         .iter()
-        .chain(EC_CONSTANTS.iter())
         .chain(HASH_CONSTANTS.iter())
         .cloned();
     for (name, value) in hex_constants {
@@ -54,15 +53,12 @@ pub fn evm_constants() -> HashMap<String, U256> {
     c
 }
 
-const MISC_CONSTANTS: [(&str, [u8; 32]); 1] = [
-    // 2^64
+const HASH_CONSTANTS: [(&str, [u8; 32]); 2] = [
+    // Hash of an empty string: keccak(b'').hex()
     (
-        "BLAKE_WORD_SIZE",
-        hex!("0000000000000000000000000000000000000000000000010000000000000000"),
+        "EMPTY_STRING_HASH",
+        hex!("c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470"),
     ),
-];
-
-const HASH_CONSTANTS: [(&str, [u8; 32]); 1] = [
     // Hash of an empty node: keccak(rlp.encode(b'')).hex()
     (
         "EMPTY_NODE_HASH",