diff --git a/walls.scad b/walls.scad
index 973bba8..1284fa7 100644
--- a/walls.scad
+++ b/walls.scad
@@ -91,10 +91,10 @@ module thinning_wall(h=50, l=100, thick=5, ang=30, braces=false, strut, wall, an
     wall = is_num(wall)? wall : thick/2;
 
     bevel_h = strut + (thick-wall)/2/tan(ang);
-    cp1 = circle_2tangents([0,0,h/2], [l2/2,0,h/2], [l1/2,0,-h/2], r=strut)[0];
-    cp2 = circle_2tangents([0,0,h/2], [l2/2,0,h/2], [l1/2,0,-h/2], r=bevel_h)[0];
-    cp3 = circle_2tangents([0,0,-h/2], [l1/2,0,-h/2], [l2/2,0,h/2], r=bevel_h)[0];
-    cp4 = circle_2tangents([0,0,-h/2], [l1/2,0,-h/2], [l2/2,0,h/2], r=strut)[0];
+    cp1 = circle_2tangents([0,0,+h/2], [l2/2,0,+h/2], [l1/2,0,-h/2], r=strut)[0];
+    cp2 = circle_2tangents([0,0,+h/2], [l2/2,0,+h/2], [l1/2,0,-h/2], r=bevel_h)[0];
+    cp3 = circle_2tangents([0,0,-h/2], [l1/2,0,-h/2], [l2/2,0,+h/2], r=bevel_h)[0];
+    cp4 = circle_2tangents([0,0,-h/2], [l1/2,0,-h/2], [l2/2,0,+h/2], r=strut)[0];
 
     z1 = h/2;
     z2 = cp1.z;
@@ -116,7 +116,7 @@ module thinning_wall(h=50, l=100, thick=5, ang=30, braces=false, strut, wall, an
 
     size = [l1, thick, h];
     attachable(anchor,spin,orient, size=size, size2=[l2,thick]) {
-        union() {
+        zrot(90) {
             polyhedron(
                 points=[
                     [-x4, -y1, -z1],