diff --git a/src/_impl/_bezier_smooth_impl.scad b/src/_impl/_bezier_smooth_impl.scad
index b56572d2..8ff0c56f 100644
--- a/src/_impl/_bezier_smooth_impl.scad
+++ b/src/_impl/_bezier_smooth_impl.scad
@@ -2,7 +2,7 @@ use <../__comm__/__to3d.scad>;
 use <../__comm__/__to2d.scad>;
 use <../__comm__/__angy_angz.scad>;
 use <../bezier_curve.scad>;
-use <../angle_between.scad>;
+use <../util/angle_between.scad>;
 
 function _corner_ctrl_pts(round_d, p1, p2, p3) =
     let(
diff --git a/src/angle_between.scad b/src/util/angle_between.scad
similarity index 100%
rename from src/angle_between.scad
rename to src/util/angle_between.scad
diff --git a/src/degrees.scad b/src/util/degrees.scad
similarity index 100%
rename from src/degrees.scad
rename to src/util/degrees.scad
diff --git a/src/polar_coordinate.scad b/src/util/polar_coordinate.scad
similarity index 71%
rename from src/polar_coordinate.scad
rename to src/util/polar_coordinate.scad
index 0b377a8b..56ea5335 100644
--- a/src/polar_coordinate.scad
+++ b/src/util/polar_coordinate.scad
@@ -1,3 +1,3 @@
-use <__comm__/__angy_angz.scad>;
+use <../__comm__/__angy_angz.scad>;
 
 function polar_coordinate(point) = [norm(point), atan2(point[1], point[0])]; // r, theta 
\ No newline at end of file
diff --git a/src/radians.scad b/src/util/radians.scad
similarity index 100%
rename from src/radians.scad
rename to src/util/radians.scad
diff --git a/src/spherical_coordinate.scad b/src/util/spherical_coordinate.scad
similarity index 100%
rename from src/spherical_coordinate.scad
rename to src/util/spherical_coordinate.scad