diff --git a/src/kiri/mode/cam/cl-helical.js b/src/kiri/mode/cam/cl-helical.js
index 3e11f10d..0bcd1617 100644
--- a/src/kiri/mode/cam/cl-helical.js
+++ b/src/kiri/mode/cam/cl-helical.js
@@ -20,7 +20,7 @@ export function selectHelical() {
     alert = api.show.alert("[esc] cancels surface selection");
     for (let [wid, arr] of Object.entries(cylinders)) {
       let widget = api.widgets.forid(wid);
-      if (widget && arr.length)
+      if (widget && arr?.length)
         for (let faceid of arr) {
           CAM.cylinderToggle(widget, faceid, (faceids) => {
             // cylinders[widget.id] = faceids;
@@ -41,7 +41,6 @@ export function selectHelical() {
         console.log( error );
         return;
       }
-      console.log( faces );
       cylinders[widget.id] = faces;
     });
   };