diff --git a/circle.scad b/circle.scad
index 49d913e..a87f816 100644
--- a/circle.scad
+++ b/circle.scad
@@ -75,7 +75,7 @@ module __half_circle_degrees(diameter, degrees) {
     // But... Who cares? #sorrynotsorry ;)
     difference() {
         libcircle_half(d=diameter);
-        rotate([0, 0, degrees])
+        rotate([0, 0, -degrees])
         translate([0, -diameter/2])
         square([diameter/2, diameter]);
     }