diff --git a/evm/src/cpu/kernel/asm/hash/sha2/main.asm b/evm/src/cpu/kernel/asm/hash/sha2/main.asm
index e47d1838..1deab294 100644
--- a/evm/src/cpu/kernel/asm/hash/sha2/main.asm
+++ b/evm/src/cpu/kernel/asm/hash/sha2/main.asm
@@ -31,7 +31,7 @@ global sha2_pad:
     DUP1
     // stack: num_bytes, num_bytes, retdest
     %add_const(8)
-    %shr_const(6)
+    %div_const(64)
     
     %increment
     // stack: num_blocks = (num_bytes+8)//64 + 1, num_bytes, retdest
diff --git a/evm/src/cpu/kernel/asm/hash/sha2/ops.asm b/evm/src/cpu/kernel/asm/hash/sha2/ops.asm
index d50e5c9a..6a4c5e3b 100644
--- a/evm/src/cpu/kernel/asm/hash/sha2/ops.asm
+++ b/evm/src/cpu/kernel/asm/hash/sha2/ops.asm
@@ -34,7 +34,7 @@
     // stack: rotr(x, 18), x, rotr(x, 7)
     SWAP1
     // stack: x, rotr(x, 18), rotr(x, 7)
-    %shr_const(3)
+    %div_const(8) // equivalent to %shr_const(3)
     // stack: shr(x, 3), rotr(x, 18), rotr(x, 7)
     XOR
     XOR
diff --git a/evm/src/cpu/kernel/asm/hash/sha2/write_length.asm b/evm/src/cpu/kernel/asm/hash/sha2/write_length.asm
index 5727498c..bb7a01a8 100644
--- a/evm/src/cpu/kernel/asm/hash/sha2/write_length.asm
+++ b/evm/src/cpu/kernel/asm/hash/sha2/write_length.asm
@@ -15,7 +15,7 @@
     %decrement
     SWAP1
     // stack: length, last_addr - 1
-    %shr_const(8)
+    %div_const(256) // equivalent to %shr_const(8)
     // stack: length >> 8, last_addr - 1
     DUP1
     // stack: length >> 8, length >> 8, last_addr - 1
@@ -30,7 +30,7 @@
     %decrement
     SWAP1
     // stack: length >> 8, last_addr - 2
-    %shr_const(8)
+    %div_const(256) // equivalent to %shr_const(8)
     // stack: length >> 16, last_addr - 2
     DUP1
     // stack: length >> 16, length >> 16, last_addr - 2
@@ -45,7 +45,7 @@
     %decrement
     SWAP1
     // stack: length >> 16, last_addr - 3
-    %shr_const(8)
+    %div_const(256) // equivalent to %shr_const(8)
     // stack: length >> 24, last_addr - 3
     DUP1
     // stack: length >> 24, length >> 24, last_addr - 3
@@ -60,7 +60,7 @@
     %decrement
     SWAP1
     // stack: length >> 24, last_addr - 4
-    %shr_const(8)
+    %div_const(256) // equivalent to %shr_const(8)
     // stack: length >> 32, last_addr - 4
     DUP1
     // stack: length >> 32, length >> 32, last_addr - 4
@@ -75,7 +75,7 @@
     %decrement
     SWAP1
     // stack: length >> 32, last_addr - 5
-    %shr_const(8)
+    %div_const(256) // equivalent to %shr_const(8)
     // stack: length >> 40, last_addr - 5
     DUP1
     // stack: length >> 40, length >> 40, last_addr - 5
@@ -90,7 +90,7 @@
     %decrement
     SWAP1
     // stack: length >> 40, last_addr - 6
-    %shr_const(8)
+    %div_const(256) // equivalent to %shr_const(8)
     // stack: length >> 48, last_addr - 6
     DUP1
     // stack: length >> 48, length >> 48, last_addr - 6
@@ -105,7 +105,7 @@
     %decrement
     SWAP1
     // stack: length >> 48, last_addr - 7
-    %shr_const(8)
+    %div_const(256) // equivalent to %shr_const(8)
     // stack: length >> 56, last_addr - 7
     DUP1
     // stack: length >> 56, length >> 56, last_addr - 7