diff --git a/packages/asset-swapper/src/utils/market_operation_utils/path_optimizer.ts b/packages/asset-swapper/src/utils/market_operation_utils/path_optimizer.ts
index e5a1fd9325..dd5627fa10 100644
--- a/packages/asset-swapper/src/utils/market_operation_utils/path_optimizer.ts
+++ b/packages/asset-swapper/src/utils/market_operation_utils/path_optimizer.ts
@@ -77,7 +77,7 @@ function mixPaths(
                 nextAllFills.splice(i, 1);
                 // Recurse.
                 _walk(
-                    [...path, fill],
+                    nextPath,
                     input.plus(BigNumber.min(remainingInput, fill.input)),
                     output.plus(
                         // Clip the output of the next fill to the remaining