diff --git a/debug.scad b/debug.scad
index 5629a20..64e09f1 100644
--- a/debug.scad
+++ b/debug.scad
@@ -268,7 +268,7 @@ module show_anchors(s=10, std=true, custom=true) {
 // Examples:
 //   frame_ref(25);
 module frame_ref(s=15) {
-	noop() {
+	cube(0.01, center=true) {
 		attach(RIGHT) anchor_arrow(s=s, color="red", flag=false);
 		attach(BACK) anchor_arrow(s=s, color="green", flag=false);
 		attach(TOP) anchor_arrow(s=s, color="blue", flag=false);
diff --git a/shapes.scad b/shapes.scad
index 1618e7b..4233f7e 100644
--- a/shapes.scad
+++ b/shapes.scad
@@ -1638,7 +1638,7 @@ module nil() union(){}
 // Description:
 //   Passes through the children passed to it, with no action at all.
 //   Useful while debugging when you want to replace a command.
-module noop(orient=ORIENT_Z) orient_and_anchor([0,0,0], orient, CENTER, chain=true) {nil(); children();}
+module noop(orient=ORIENT_Z) orient_and_anchor([0.01,0.01,0.01], orient, CENTER, chain=true) {nil(); children();}
 
 
 // Module: pie_slice()