diff --git a/avr/devices/n30/enclosure.scad b/avr/devices/n30/enclosure.scad
index 4103b27..b145ad7 100644
--- a/avr/devices/n30/enclosure.scad
+++ b/avr/devices/n30/enclosure.scad
@@ -115,7 +115,7 @@ union() {
         // cable hole
         translate([(width/2)-3, -12, wall_thickness+10])
           rotate([00, 90, 0])
-            cylinder(r = 10/2, h = 6);
+            cylinder(r = 7/2, h = 6);
 
         // holes for cable binders
         translate([(width/2)-3, length/4, wall_thickness+12])