diff --git a/compiler/CommentNode.js b/compiler/CommentNode.js
index 4d16e2d2a..b18e3d19c 100644
--- a/compiler/CommentNode.js
+++ b/compiler/CommentNode.js
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 'use strict';
-function CommentNode(comment, escapeXml) {
+function CommentNode(comment) {
     CommentNode.$super.call(this, 'comment');
     this.comment = comment;
 }