diff --git a/triton-isa/src/op_stack.rs b/triton-isa/src/op_stack.rs
index 7862d5ba..39c916ba 100644
--- a/triton-isa/src/op_stack.rs
+++ b/triton-isa/src/op_stack.rs
@@ -39,9 +39,8 @@ pub const NUM_OP_STACK_REGISTERS: usize = OpStackElement::COUNT;
 #[allow(clippy::len_without_is_empty)]
 pub struct OpStack {
     ///`op_stack[0]` is the top of the stack,
-    /// `op_stack.stack[0]` is the lowest element in the stack. to figure out how it is achieved?
-    // TODO rename this field to queue
-    pub stack: VecDeque<BFieldElement>,
+    /// `op_stack.stack[0]` is the lowest element in the stack.
+    stack: VecDeque<BFieldElement>,
 
     underflow_io_sequence: Vec<UnderflowIO>,
 }