diff --git a/c3cat-bottle-clip/c3cat-bottle-clip.scad b/c3cat-bottle-clip/c3cat-bottle-clip.scad
index 0abfe50..99d4552 100644
--- a/c3cat-bottle-clip/c3cat-bottle-clip.scad
+++ b/c3cat-bottle-clip/c3cat-bottle-clip.scad
@@ -281,7 +281,7 @@ module bottle_clip(ru=13, rl=17.5, ht=26, width=2.5, name="c3cat", font="write/o
       // finally, subtract a cube as a gap so we can clip it to the bottle
       rotate([0, 0, 45])
         translate([0, 0, -1])
-          cube([50, 50, 50]);
+          cube([rl+ru, rl+ru, 2*ht]);
     }
   }
   // text