diff --git a/docs/lib-rounded_cylinder.md b/docs/lib-rounded_cylinder.md
index b50dd4e5..d582b75c 100644
--- a/docs/lib-rounded_cylinder.md
+++ b/docs/lib-rounded_cylinder.md
@@ -9,7 +9,6 @@ Creates a rounded cylinder.
 - `round_r` : The sphere radius which fits the edges of the bottom and the top.
 - `center` : `false` (default), z ranges from 0 to h. `true`, z ranges from -h/2 to +h/2
 - `convexity` : See [Rotate Extrude](https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Using_the_2D_Subsystem#Rotate_Extrude) for details.
-- `slices` : The fragments of the rounded edge. 
 - `$fa`, `$fs`, `$fn` : Used to control the eight quadrants. Check [the circle module](https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Using_the_2D_Subsystem#circle) for more details. The final fragments of a sphere will be a multiple of 4 to fit edges.
 
 ## Examples
diff --git a/src/rounded_cylinder.scad b/src/rounded_cylinder.scad
index 1933d09b..57471700 100644
--- a/src/rounded_cylinder.scad
+++ b/src/rounded_cylinder.scad
@@ -13,15 +13,14 @@
 include <__private__/__is_vector.scad>;
 include <__private__/__frags.scad>;
 
-module rounded_cylinder(radius, h, round_r, convexity = 2, center = false, slices = undef) {
+module rounded_cylinder(radius, h, round_r, convexity = 2, center = false) {
     is_vt = __is_vector(radius);
     r1 = is_vt ? radius[0] : radius;
     r2 = is_vt ? radius[1] : radius;
     
     function is_integer(n) = n % 1 == 0; 
 
-    function round_frags(sector_angle) = 
-        slices == undef ? __frags(round_r) * sector_angle / 360 : slices;
+    function round_frags(sector_angle) = __frags(round_r) * sector_angle / 360;
 
     function step_a(sector_angle, round_frags) =
         sector_angle / round_frags;