diff --git a/curves.scad b/curves.scad
index 87c675a..5ababc1 100644
--- a/curves.scad
+++ b/curves.scad
@@ -1,9 +1,9 @@
 // Parametric curves, to be used as paths
 // Licensed under the MIT license.
 // © 2010 by Elmo Mäntynen
-
-include <constants.scad>
 use <math.scad>
+include <constants.scad>
+
 
 
 /* A circular helix of radius a and pitch 2πb is described by the following parametrisation:
diff --git a/involute_gears.scad b/involute_gears.scad
index 35840a2..eaf9051 100644
--- a/involute_gears.scad
+++ b/involute_gears.scad
@@ -509,7 +509,7 @@ function rotate_point (rotate, coord) =
 function involute (base_radius, involute_angle) =
 [
 	base_radius*(cos (involute_angle) + involute_angle*pi/180*sin (involute_angle)),
-	base_radius*(sin (involute_angle) - involute_angle*pi/180*cos (involute_angle)),
+	base_radius*(sin (involute_angle) - involute_angle*pi/180*cos (involute_angle))
 ];
 
 
diff --git a/motors.scad b/motors.scad
index 8d62f5f..51f8d89 100644
--- a/motors.scad
+++ b/motors.scad
@@ -92,5 +92,5 @@ module _stepper_motor_mount(
 			%cylinder(r=motor_shaft_diameter/2,h=motor_length+motor_shaft_length--1, center = true);
 		}
 	}
-	};
+	}
 }
diff --git a/shapes.scad b/shapes.scad
index 9f6b108..a4540bb 100644
--- a/shapes.scad
+++ b/shapes.scad
@@ -29,13 +29,13 @@
 //----------------------
 
 // size is a vector [w, h, d]
-module box(width, height, depth,) {
-  cube([width, height, depth,], true);
+module box(width, height, depth) {
+  cube([width, height, depth], true);
 }
 
 // size is a vector [w, h, d]
 module roundedBox(width, height, depth, radius) {
-  size=[width, height, depth,];
+  size=[width, height, depth];
   cube(size - [2*radius,0,0], true);
   cube(size - [0,2*radius,0], true);
   for (x = [radius-size[0]/2, -radius+size[0]/2],
diff --git a/stepper.scad b/stepper.scad
index 4baddc3..c19d4af 100644
--- a/stepper.scad
+++ b/stepper.scad
@@ -73,7 +73,7 @@ Nema08 = [
                 [NemaBackAxleLength, 9.9*mm],
                 [NemaAxleFlatDepth, -1*mm],
                 [NemaAxleFlatLengthFront, 0*mm],
-                [NemaAxleFlatLengthBack, 0*mm],
+                [NemaAxleFlatLengthBack, 0*mm]
          ];
 
 Nema11 = [
@@ -95,7 +95,7 @@ Nema11 = [
                 [NemaBackAxleLength, 10*mm],
                 [NemaAxleFlatDepth, 0.5*mm],
                 [NemaAxleFlatLengthFront, 10*mm],
-                [NemaAxleFlatLengthBack, 9*mm],
+                [NemaAxleFlatLengthBack, 9*mm]
          ];
 
 Nema14 = [
@@ -117,7 +117,7 @@ Nema14 = [
                 [NemaBackAxleLength, 10*mm],
                 [NemaAxleFlatDepth, 0.5*mm],
                 [NemaAxleFlatLengthFront, 15*mm],
-                [NemaAxleFlatLengthBack, 9*mm],
+                [NemaAxleFlatLengthBack, 9*mm]
          ];
 
 Nema17 = [
@@ -139,7 +139,7 @@ Nema17 = [
                 [NemaBackAxleLength, 15*mm],
                 [NemaAxleFlatDepth, 0.5*mm],
                 [NemaAxleFlatLengthFront, 15*mm],
-                [NemaAxleFlatLengthBack, 14*mm],
+                [NemaAxleFlatLengthBack, 14*mm]
          ];
 
 Nema23 = [
@@ -161,7 +161,7 @@ Nema23 = [
                 [NemaBackAxleLength, 15.60*mm],
                 [NemaAxleFlatDepth, 0.5*mm],
                 [NemaAxleFlatLengthFront, 16*mm],
-                [NemaAxleFlatLengthBack, 14*mm],
+                [NemaAxleFlatLengthBack, 14*mm]
          ];
 
 Nema34 = [
@@ -183,7 +183,7 @@ Nema34 = [
                 [NemaBackAxleLength, 34*mm],
                 [NemaAxleFlatDepth, 1.20*mm],
                 [NemaAxleFlatLengthFront, 25*mm],
-                [NemaAxleFlatLengthBack, 25*mm],
+                [NemaAxleFlatLengthBack, 25*mm]
          ];