diff --git a/docs/lib-golden_spiral_extrude.md b/docs/lib-golden_spiral_extrude.md
index 3734d5b8..1139bccb 100644
--- a/docs/lib-golden_spiral_extrude.md
+++ b/docs/lib-golden_spiral_extrude.md
@@ -2,7 +2,7 @@
 
 Extrudes a 2D shape along the path of a golden spiral. 
 
-When using this module, you should use points to represent the 2D shape. You need to provide indexes of triangles, too. This module provides two prepared triangles indexes. See [polysections](https://openhome.cc/eGossip/OpenSCAD/lib-polysections.html) for details.
+When using this module, you should use points to represent the 2D shape. If your 2D shape is not solid, indexes of triangles are required. See [polysections](https://openhome.cc/eGossip/OpenSCAD/lib-polysections.html) for details.
 
 Dependencies: `circle_path`, `rotate_p`, `golden_spiral`, `cross_sections`, `polysections`.
 
@@ -15,7 +15,7 @@ Dependencies: `circle_path`, `rotate_p`, `golden_spiral`, `cross_sections`, `pol
 - `rt_dir` : `"CT_CLK"` for counterclockwise. `"CLK"` for clockwise. The default value is `"CT_CLK"`.
 - `twist` : The number of degrees of through which the shape is extruded.
 - `scale` : Scales the 2D shape by this value over the length of the extrusion. Scale can be a scalar or a vector.
-- `triangles` : `"RADIAL"` (default), `"HOLLOW"`, `"TAPE"` or user-defined indexes. See [polysections](https://openhome.cc/eGossip/OpenSCAD/lib-polysections.html) for details.
+- `triangles` : `"SOLID"` (default), `"HOLLOW"` or user-defined indexes. See [polysections](https://openhome.cc/eGossip/OpenSCAD/lib-polysections.html) for details.
 
 ## Examples
     
diff --git a/src/golden_spiral_extrude.scad b/src/golden_spiral_extrude.scad
index 4e0ad662..5504301b 100644
--- a/src/golden_spiral_extrude.scad
+++ b/src/golden_spiral_extrude.scad
@@ -11,7 +11,7 @@
 **/
 
 module golden_spiral_extrude(shape_pts, from, to, point_distance, 
-                             rt_dir = "CT_CLK", twist = 0, scale = 1.0, triangles = "RADIAL") {
+                             rt_dir = "CT_CLK", twist = 0, scale = 1.0, triangles = "SOLID") {
 
     pts_angles = golden_spiral(
         from = from,