diff --git a/lib/primitives/invitem.js b/lib/primitives/invitem.js
index ea31f083..9966b19f 100644
--- a/lib/primitives/invitem.js
+++ b/lib/primitives/invitem.js
@@ -52,12 +52,12 @@ InvItem.types = {
 InvItem.typesByVal = util.revMap(InvItem.types);
 
 /**
- * Witness mask for inv types.
+ * Witness bit for inv types.
  * @const {Number}
  * @default
  */
 
-InvItem.WITNESS_MASK = 1 << 30;
+InvItem.WITNESS_FLAG = 1 << 30;
 
 /**
  * Write inv item to buffer writer.
@@ -171,7 +171,7 @@ InvItem.prototype.isTX = function isTX() {
  */
 
 InvItem.prototype.hasWitness = function hasWitness() {
-  return (this.type & InvItem.WITNESS_MASK) !== 0;
+  return (this.type & InvItem.WITNESS_FLAG) !== 0;
 };
 
 /**