diff --git a/helper/screws.scad b/helper/screws.scad
index 3199c77..1c80579 100644
--- a/helper/screws.scad
+++ b/helper/screws.scad
@@ -5,7 +5,7 @@ include <./math.scad>
 
 /********************************************************************************/
 // M3 dimensions
-m3HoleRadiusSlack = xySlack;
+m3HoleRadiusSlack = radiusXYSlack;
 m3Diameter = 3.0;
 m3Radius = m3Diameter / 2.0;
 m3RadiusSlacked = m3Radius + m3HoleRadiusSlack;
@@ -19,7 +19,7 @@ m3HexNutThickness = 2.2;
 
 /********************************************************************************/
 // M4 dimensions
-m4HoleRadiusSlack = xySlack;
+m4HoleRadiusSlack = radiusXYSlack;
 m4Diameter = 4.0;
 m4Radius = m4Diameter / 2.0;
 m4RadiusSlacked = m4Radius + m4HoleRadiusSlack;
diff --git a/rbuild.py b/rbuild.py
index 0ef38db..49b68d3 100644
--- a/rbuild.py
+++ b/rbuild.py
@@ -115,7 +115,7 @@ def run_build(args):
     target_var = args.t
     dz = args.dz
     nightly = args.nightly
-    build_gifs = args.build_assembly_gifs
+    build_gifs = args.build_gifs
 
     if (build_var is not None) == (build_gifs is True):
         print("Please either provide the build (-b) variable, or the build-gifs option (--build-gifs)")