diff --git a/box-contracts/src/G3M.sol b/box-contracts/src/G3M.sol
index eb146bbf5..ad10aa738 100644
--- a/box-contracts/src/G3M.sol
+++ b/box-contracts/src/G3M.sol
@@ -331,8 +331,8 @@ contract G3M is IG3M {
     }
 
     /// @inheritdoc IG3M
-    function getInvariant() external view returns (UD60x18) {
-        return computeInvariant(reserveX, weightX(), reserveY, weightY());
+    function getInvariant() external view returns (uint) {
+        return convert(computeInvariant(reserveX, weightX(), reserveY, weightY()));
     }
 
     function reserveXWithoutPrecision() external view returns (uint256) {
diff --git a/box-contracts/src/IG3M.sol b/box-contracts/src/IG3M.sol
index 4c5f6a462..a7f5bb752 100644
--- a/box-contracts/src/IG3M.sol
+++ b/box-contracts/src/IG3M.sol
@@ -118,7 +118,7 @@ interface IG3M {
     function getSpotPrice() external view returns (uint256);
 
     /// @notice Computes the invariant of the pool.
-    function getInvariant() external view returns (UD60x18);
+    function getInvariant() external view returns (uint);
 
     /// @notice Address of token X.
     function tokenX() external view returns (address);
diff --git a/simulation/src/agents/arbitrageur/g3m.rs b/simulation/src/agents/arbitrageur/g3m.rs
index 8c3edd6bd..778675260 100644
--- a/simulation/src/agents/arbitrageur/g3m.rs
+++ b/simulation/src/agents/arbitrageur/g3m.rs
@@ -14,9 +14,9 @@ impl Strategy for G3M<RevmMiddleware> {
         info!("weight_x: {}", weight_x);
         let weight_y = I256::from_raw(self.weight_y().call().await?);
         info!("weight_y: {}", weight_y);
-        let reserve_x = I256::from_raw(self.reserve_x().call().await?);
+        let reserve_x = I256::from_raw(self.reserve_x_without_precision().call().await?);
         info!("reserve_x: {}", reserve_x);
-        let reserve_y = I256::from_raw(self.reserve_y().call().await?);
+        let reserve_y = I256::from_raw(self.reserve_y_without_precision().call().await?);
         info!("reserve_y: {}", reserve_y);
         let invariant = I256::from_raw(self.get_invariant().call().await?);
         info!("invariant: {}", invariant);
@@ -31,9 +31,6 @@ impl Strategy for G3M<RevmMiddleware> {
         let delta_x = invariant * math.pow(inside, weight_y).call().await? / iwad - reserve_x;
         info!("delta_x: {}", delta_x);
 
-        let gamma = iwad - (I256::from_raw(self.swap_fee().await?)) * I256::from(10u128.pow(14));
-        info!("gamma: {}", gamma);
-        let delta_x = delta_x * gamma / iwad;
         Ok(delta_x.into_raw())
     }
 
@@ -46,9 +43,9 @@ impl Strategy for G3M<RevmMiddleware> {
         info!("weight_x: {}", weight_x);
         let weight_y = I256::from_raw(self.weight_y().call().await?);
         info!("weight_y: {}", weight_y);
-        let reserve_x = I256::from_raw(self.reserve_x().call().await?);
+        let reserve_x = I256::from_raw(self.reserve_x_without_precision().call().await?);
         info!("reserve_x: {}", reserve_x);
-        let reserve_y = I256::from_raw(self.reserve_y().call().await?);
+        let reserve_y = I256::from_raw(self.reserve_y_without_precision().call().await?);
         info!("reserve_y: {}", reserve_y);
         let invariant = I256::from_raw(self.get_invariant().call().await?);
         info!("invariant: {}", invariant);
@@ -62,9 +59,6 @@ impl Strategy for G3M<RevmMiddleware> {
         info!("inside: {}", inside);
         let delta_y = invariant * math.pow(inside, weight_x).call().await? / iwad - reserve_y;
         info!("delta_y: {}", delta_y);
-        let gamma = iwad - (I256::from_raw(self.swap_fee().await?)) * I256::from(10u128.pow(14));
-        info!("gamma: {}", gamma);
-        let delta_y = delta_y * gamma / iwad;
 
         Ok(delta_y.into_raw())
     }