diff --git a/test/simulation/PrecompileSim.sol b/test/simulation/PrecompileSim.sol
index 054730d..6d1b4ed 100644
--- a/test/simulation/PrecompileSim.sol
+++ b/test/simulation/PrecompileSim.sol
@@ -96,8 +96,8 @@ contract PrecompileSim {
         }
 
         if (address(this) == ACCOUNT_MARGIN_SUMMARY_PRECOMPILE_ADDRESS) {
-            (uint16 perp_dex_index, address user) = abi.decode(data, (uint16, address));
-            return abi.encode(_hyperCore.readAccountMarginSummary(perp_dex_index, user));
+            address user = abi.decode(data, (address));
+            return abi.encode(_hyperCore.readAccountMarginSummary(user));
         }
 
         return _makeRpcCall(address(this), data);
diff --git a/test/simulation/hyper-core/CoreExecution.sol b/test/simulation/hyper-core/CoreExecution.sol
index 0cd51a1..21090fc 100644
--- a/test/simulation/hyper-core/CoreExecution.sol
+++ b/test/simulation/hyper-core/CoreExecution.sol
@@ -133,9 +133,6 @@ contract CoreExecution is CoreView {
                 uint64 avgEntryPrice = _accounts[sender].positions[perpIndex].entryNtl / uint64(-szi);
                 int64 pnl = int64(action.sz) * (int64(avgEntryPrice) - int64(_markPx));
 
-                uint64 closedMargin =
-                    (uint64(action.sz) * _accounts[sender].positions[perpIndex].entryNtl / uint64(-szi)) / leverage;
-
                 _accounts[sender].perpBalance = pnl > 0
                     ? _accounts[sender].perpBalance + uint64(pnl)
                     : _accounts[sender].perpBalance - uint64(-pnl);
@@ -150,7 +147,6 @@ contract CoreExecution is CoreView {
                     : _accounts[sender].perpBalance - uint64(-pnl);
 
                 uint64 newLongSize = uint64(newSzi);
-                uint64 newMargin = newLongSize * _markPx / leverage;
 
                 _accounts[sender].positions[perpIndex].szi = newSzi;
                 _accounts[sender].positions[perpIndex].entryNtl = newLongSize * _markPx;
@@ -200,8 +196,6 @@ contract CoreExecution is CoreView {
             if (newSzi >= 0) {
                 uint64 avgEntryPrice = _accounts[sender].positions[perpIndex].entryNtl / uint64(szi);
                 int64 pnl = int64(action.sz) * (int64(_markPx) - int64(avgEntryPrice));
-                uint64 closedMargin =
-                    (uint64(action.sz) * _accounts[sender].positions[perpIndex].entryNtl / uint64(szi)) / leverage;
 
                 _accounts[sender].perpBalance = pnl > 0
                     ? _accounts[sender].perpBalance + uint64(pnl)
@@ -217,7 +211,6 @@ contract CoreExecution is CoreView {
                     : _accounts[sender].perpBalance - uint64(-pnl);
 
                 uint64 newShortSize = uint64(-newSzi);
-                uint64 newMargin = newShortSize * _markPx / leverage;
 
                 _accounts[sender].positions[perpIndex].szi = newSzi;
                 _accounts[sender].positions[perpIndex].entryNtl = newShortSize * _markPx;
diff --git a/test/simulation/hyper-core/CoreView.sol b/test/simulation/hyper-core/CoreView.sol
index fdbd529..e28a7b5 100644
--- a/test/simulation/hyper-core/CoreView.sol
+++ b/test/simulation/hyper-core/CoreView.sol
@@ -167,7 +167,7 @@ contract CoreView is CoreState {
         return _accounts[account].activated;
     }
 
-    function readAccountMarginSummary(uint16 perp_dex_index, address user)
+    function readAccountMarginSummary(address user)
         public
         returns (PrecompileLib.AccountMarginSummary memory)
     {