diff --git a/riscv_executor/src/lib.rs b/riscv_executor/src/lib.rs
index 8ea1579d7b..f15a46cb38 100644
--- a/riscv_executor/src/lib.rs
+++ b/riscv_executor/src/lib.rs
@@ -672,8 +672,8 @@ impl<'a, 'b, F: FieldElement> Executor<'a, 'b, F> {
             Expression::UnaryOperation(op, arg) => {
                 let arg = self.eval_expression(arg)[0];
                 let result = match op {
-                    ast::parsed::UnaryOperator::Plus => arg.s(),
-                    ast::parsed::UnaryOperator::Minus => -arg.s(),
+                    ast::parsed::UnaryOperator::Plus => arg.0,
+                    ast::parsed::UnaryOperator::Minus => -arg.0,
                     ast::parsed::UnaryOperator::LogicalNot => todo!(),
                 };