diff --git a/src/mir/builder.rs b/src/mir/builder.rs
index 6e37caf8..b4df8154 100644
--- a/src/mir/builder.rs
+++ b/src/mir/builder.rs
@@ -490,16 +490,8 @@ impl MirBuilder {
                     && self.value_origin_newbox.get(&rhs).map(|s| s == "IntegerBox").unwrap_or(false) {
                     let li = self.value_gen.next();
                     let ri = self.value_gen.next();
-                    #[cfg(feature = "mir_typeop_poc")]
-                    {
-                        self.emit_instruction(MirInstruction::TypeOp { dst: li, op: super::TypeOpKind::Cast, value: lhs, ty: MirType::Integer })?;
-                        self.emit_instruction(MirInstruction::TypeOp { dst: ri, op: super::TypeOpKind::Cast, value: rhs, ty: MirType::Integer })?;
-                    }
-                    #[cfg(not(feature = "mir_typeop_poc"))]
-                    {
-                        self.emit_instruction(MirInstruction::Cast { dst: li, value: lhs, target_type: MirType::Integer })?;
-                        self.emit_instruction(MirInstruction::Cast { dst: ri, value: rhs, target_type: MirType::Integer })?;
-                    }
+                    self.emit_instruction(MirInstruction::TypeOp { dst: li, op: super::TypeOpKind::Cast, value: lhs, ty: MirType::Integer })?;
+                    self.emit_instruction(MirInstruction::TypeOp { dst: ri, op: super::TypeOpKind::Cast, value: rhs, ty: MirType::Integer })?;
                     (li, ri)
                 } else { (lhs, rhs) };
                 self.emit_instruction(MirInstruction::Compare { dst, op, lhs: lhs2, rhs: rhs2 })?;