diff --git a/evm/src/cpu/kernel/asm/ripemd/compression.asm b/evm/src/cpu/kernel/asm/ripemd/compression.asm
index c8cbd020..67757738 100644
--- a/evm/src/cpu/kernel/asm/ripemd/compression.asm
+++ b/evm/src/cpu/kernel/asm/ripemd/compression.asm
@@ -25,16 +25,38 @@
 /// state[i], stateL[i], stateR[i], output[i], virt, retdest
 
 global compress:
-    // stack:                                                        STATE, virt, retdest
-    %stack (stack) -> (0, 0, 16, 5, 1, stack)
-    %stack (CONSTS: 5, virt, switch, STATE: 5) -> (STATE, CONSTS, virt, switch, STATE)
-    // stack:                   STATE, 0, 0, 16, 5, 1, virt, switch, STATE, virt, retdest 
+    // stack:                                        STATE, virt, retdest
+    PUSH switch
+    DUP7
+    PUSH 1
+    PUSH 5  
+    PUSH 16  
+    PUSH 0  
+    PUSH 0
+    // stack:         0, 0, 16, 5, 1, virt, switch, STATE, virt, retdest
+    DUP12  
+    DUP12  
+    DUP12  
+    DUP12  
+    DUP12
+    // stack:  STATE, 0, 0, 16, 5, 1, virt, switch, STATE, virt, retdest 
     %jump(loop)
 switch:
-    // stack: STATEL, STATE, virt, retdest
-    %stack (STATEL: 5, STATE: 5) -> (STATE, STATEL, STATE)
-    %stack (STATE: 5) -> (STATE, 0, 0, 16, 5, 0)
-    // %stack (STATEL: 5, STATE: 5, virt) -> (STATE, 0, 0, 16, 5, 0, virt, mix, STATEL, STATE, virt)
+    // stack:                                   STATEL, STATE, virt, retdest
+    PUSH mix
+    DUP12 
+    PUSH 0
+    PUSH 5  
+    PUSH 16 
+    // stack:              16, 5, 0, virt, mix, STATEL, STATE, virt, retdest
+    DUP15
+    DUP15
+    DUP15
+    DUP15
+    DUP15
+    // stack: STATE,       16, 5, 0, virt, mix, STATEL, STATE, virt, retdest
+    %stack (STATE: 5) -> (STATE, 0, 0)
+    // stack: STATE, 0, 0, 16, 5, 0, virt, mix, STATEL, STATE, virt, retdest 
     %jump(loop)
 mix:
     // stack: r0, r1, r2, r3, r4, l0, l1, l2, l3, l4, s0, s1, s2, s3, s4, VR, RD