diff --git a/joiners.scad b/joiners.scad
index c98e476..30cef00 100644
--- a/joiners.scad
+++ b/joiners.scad
@@ -556,7 +556,7 @@ module dovetail(gender, length, l, width, w, height, h, angle, slope, taper, bac
 					reverse(concat(smallend_points, xflip(p=reverse(smallend_points)))),
 					reverse(concat(bigend_points, xflip(p=reverse(bigend_points))))
 				],
-				convexity=4
+				convexity=4, slices=0
 			);
 		}
 		children();
diff --git a/rounding.scad b/rounding.scad
index 3457ee0..f293cff 100644
--- a/rounding.scad
+++ b/rounding.scad
@@ -12,6 +12,7 @@
 include <BOSL2/beziers.scad>
 include <BOSL2/strings.scad>
 include <BOSL2/structs.scad>
+include <BOSL2/skin.scad>
 
 
 // CommonCode:
@@ -884,7 +885,7 @@ function os_profile(points, extra,check_valid, quality, offset_maxstep, offset)
 // Example: If you give a non-convex input you get a convex hull output
 //   right(50) linear_extrude(height=7) star(5,r=22,ir=13);
 //   convex_offset_extrude(bottom = os_chamfer(height=-2), top=os_chamfer(height=1), height=7)
-//     star(5,r=22,ir=13)
+//     star(5,r=22,ir=13);
 module convex_offset_extrude(
 	height, h, l, 
 	top=[], bottom=[],
@@ -911,8 +912,8 @@ module convex_offset_extrude(
 	top = struct_set(argspec, top, grow=false);
 	bottom = struct_set(argspec, bottom, grow=false);
 
-	offsets_bot = rounding_offsets(bottom, -1);
-	offsets_top = rounding_offsets(top, 1);
+	offsets_bot = _rounding_offsets(bottom, -1);
+	offsets_top = _rounding_offsets(top, 1);
 
 	// "Extra" height enlarges the result beyond the requested height, so subtract it
 	bottom_height = len(offsets_bot)==0 ? 0 : abs(select(offsets_bot,-1)[1]) - struct_val(bottom,"extra");
diff --git a/version.scad b/version.scad
index 973c797..dd94137 100644
--- a/version.scad
+++ b/version.scad
@@ -8,7 +8,7 @@
 //////////////////////////////////////////////////////////////////////
 
 
-BOSL_VERSION = [2,0,138];
+BOSL_VERSION = [2,0,139];
 
 
 // Section: BOSL Library Version Functions