diff --git a/examples/maze/sphere_maze.scad b/examples/maze/sphere_maze.scad
index f8e17602..56f26fc1 100644
--- a/examples/maze/sphere_maze.scad
+++ b/examples/maze/sphere_maze.scad
@@ -2,7 +2,7 @@ use <hull_polyline3d.scad>;
 use <rotate_p.scad>;
 use <square_maze.scad>;
 use <matrix/m_rotation.scad>;
-use <experimental/pt_to_sphere.scad>;
+use <experimental/pt2sphere.scad>;
 
 r = 10;
 rows = 24;
@@ -26,7 +26,7 @@ module sphere_maze() {
     for(wall_pts = walls) {  
         rxpts = [
             for(p = wall_pts) 
-                pt_to_sphere(size, mr * [p[0], p[1], 0, 0] + p_offset, r)
+                pt2sphere(size, mr * [p[0], p[1], 0, 0] + p_offset, r)
         ];
         hull_polyline3d(rxpts, wall_thickness, $fn = 6);
     }
diff --git a/examples/photo_sphere.scad b/examples/photo_sphere.scad
index 4b81cd8c..98d93f82 100644
--- a/examples/photo_sphere.scad
+++ b/examples/photo_sphere.scad
@@ -1,5 +1,5 @@
 use <pixel/px_gray.scad>;
-use <experimental/pt_to_sphere.scad>;
+use <experimental/pt2sphere.scad>;
 
 photo_size = [100, 100];
 levels = [
@@ -110,14 +110,14 @@ dots = px_gray(levels, center = true, normalize = true);
 
 color("white")
     for(dot = dots) {   
-        translate(pt_to_sphere(photo_size, dot[0] + [50, 50], 50, [180, 180])) 
+        translate(pt2sphere(photo_size, dot[0] + [50, 50], 50, [180, 180])) 
             square(dot[1] * 2.5);
     }
     
 rotate([180, 0, 0])
 color("white")
     for(dot = dots) {   
-        translate(pt_to_sphere(photo_size, dot[0] + [50, 50], 50, [180, 180])) 
+        translate(pt2sphere(photo_size, dot[0] + [50, 50], 50, [180, 180])) 
             square(dot[1] * 2.5);
     }
     
diff --git a/src/experimental/pt_to_sphere.scad b/src/experimental/pt2sphere.scad
similarity index 89%
rename from src/experimental/pt_to_sphere.scad
rename to src/experimental/pt2sphere.scad
index 2a2187eb..e6213053 100644
--- a/src/experimental/pt_to_sphere.scad
+++ b/src/experimental/pt2sphere.scad
@@ -6,7 +6,7 @@ use <rotate_p.scad>;
     r: sphere radius.
     angle: [za, xa] mapping angles.
 */
-function pt_to_sphere(size, p, r, angle = [180, 360]) =
+function pt2sphere(size, p, r, angle = [180, 360]) =
     let(
         x = p[0],
         y = p[1],