diff --git a/evm/src/cpu/kernel/aggregator.rs b/evm/src/cpu/kernel/aggregator.rs
index 18bc5dc6..c1bd0b3d 100644
--- a/evm/src/cpu/kernel/aggregator.rs
+++ b/evm/src/cpu/kernel/aggregator.rs
@@ -39,16 +39,6 @@ pub(crate) fn combined_kernel() -> Kernel {
         include_str!("asm/memory/metadata.asm"),
         include_str!("asm/memory/packing.asm"),
         include_str!("asm/memory/txn_fields.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/read_to_memory.asm"),
         include_str!("asm/mpt/hash.asm"),
         include_str!("asm/mpt/hash_trie_specific.asm"),
         include_str!("asm/mpt/hex_prefix.asm"),
@@ -58,6 +48,13 @@ pub(crate) fn combined_kernel() -> Kernel {
         include_str!("asm/mpt/storage_write.asm"),
         include_str!("asm/mpt/util.asm"),
         include_str!("asm/mpt/write.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/read_to_memory.asm"),
diff --git a/evm/src/cpu/kernel/asm/memory/core.asm b/evm/src/cpu/kernel/asm/memory/core.asm
index 96caef89..7ffd904a 100644
--- a/evm/src/cpu/kernel/asm/memory/core.asm
+++ b/evm/src/cpu/kernel/asm/memory/core.asm
@@ -55,8 +55,7 @@
     // stack: (empty)
 %endmacro
 
-// Load a big-endian u32, consisting of 4 bytes (c_3, c_2, c_1, c_0),
-// from the kernel.
+// Load from the kernel a big-endian u32, consisting of 4 bytes (c_3, c_2, c_1, c_0)
 %macro mload_kernel_u32(segment)
     // stack: offset
     DUP1
@@ -85,6 +84,32 @@
     // stack: (((((c_3 << 8) | c_2) << 8) | c_1) << 8) | c_0
 %endmacro
 
+// Load from the kernel a little-endian u32, consisting of 4 bytes (c_0, c_1, c_2, c_3)
+%macro mload_kernel_u32_LE(segment)
+    // stack: offset
+    DUP1
+    %mload_kernel($segment)
+    // stack: c0                         , offset
+    DUP2
+    %add_const(1)
+    %mload_kernel($segment)
+    %shl_const(8)
+    OR
+    // stack: c0 | (c1 << 8)             , offset
+    DUP2
+    %add_const(2)
+    %mload_kernel($segment)
+    %shl_const(16)
+    OR
+    // stack: c0 | (c1 << 8) | (c2 << 16), offset
+    SWAP1
+    %add_const(3)
+    %mload_kernel($segment)
+    %shl_const(24)
+    OR
+    // stack: c0 | (c1 << 8) | (c2 << 16) | (c3 << 24)
+%endmacro
+
 // Load a u256 (big-endian) from the kernel.
 %macro mload_kernel_u256(segment)
     // stack: offset
@@ -228,6 +253,17 @@
     // stack: value
 %endmacro
 
+%macro mload_kernel_code_u32(label)
+    // stack: u32_shift
+    %mul_const(4)
+    // stack: byte_shift
+    PUSH $label
+    ADD
+    // stack: offset
+    %mload_kernel_u32(@SEGMENT_CODE)
+    // stack: value
+%endmacro
+
 // Load a big-endian u32, consisting of 4 bytes (c_3, c_2, c_1, c_0),
 // from kernel general memory.
 %macro mload_kernel_general_u32
@@ -236,6 +272,14 @@
     // stack: value
 %endmacro
 
+// Load a little-endian u32, consisting of 4 bytes (c_3, c_2, c_1, c_0),
+// from kernel general memory.
+%macro mload_kernel_general_u32_LE
+    // stack: offset
+    %mload_kernel_u32_LE(@SEGMENT_KERNEL_GENERAL)
+    // stack: value
+%endmacro
+
 // Load a u256 (big-endian) from kernel code.
 %macro mload_kernel_code_u256
     // stack: offset
diff --git a/evm/src/cpu/kernel/asm/ripemd/box.asm b/evm/src/cpu/kernel/asm/ripemd/box.asm
index 5894f219..d60d9b8c 100644
--- a/evm/src/cpu/kernel/asm/ripemd/box.asm
+++ b/evm/src/cpu/kernel/asm/ripemd/box.asm
@@ -35,7 +35,7 @@ pre_rol:
     %mload_kernel_code(r_data)
     ADD
     // stack: virt + r, box, a, b, c, d, e, F, K, boxes, rounds, sides, virt  
-    %mload_kernel_general_u32
+    %mload_kernel_general_u32_LE
     // stack:        x, box, a, b, c, d, e, F, K, boxes, rounds, sides, virt
     SWAP1  
     SWAP2 
diff --git a/evm/src/cpu/kernel/asm/ripemd/compression.asm b/evm/src/cpu/kernel/asm/ripemd/compression.asm
index b0cd7b7d..a83bf832 100644
--- a/evm/src/cpu/kernel/asm/ripemd/compression.asm
+++ b/evm/src/cpu/kernel/asm/ripemd/compression.asm
@@ -135,7 +135,6 @@ update_round_vars:
     // stack: rnd, rnd, STATE, F', K , 16, rounds, sides, virt, retdest
     SWAP8  
     POP
-    %mul_const(4)
     %mload_kernel_code_u32(k_data)
     SWAP7  
     POP