diff --git a/src/matrix/__comm__/__m_rotation.scad b/src/matrix/_impl/_m_rotation_impl.scad
similarity index 97%
rename from src/matrix/__comm__/__m_rotation.scad
rename to src/matrix/_impl/_m_rotation_impl.scad
index be8724ae..0bb34043 100644
--- a/src/matrix/__comm__/__m_rotation.scad
+++ b/src/matrix/_impl/_m_rotation_impl.scad
@@ -62,7 +62,7 @@ function __m_rotation_xyz_rotation(a) =
     let(ang = __to_ang_vect(a))
     __m_rotation_zRotation(ang[2]) * __m_rotation_yRotation(ang[1]) * __m_rotation_xRotation(ang[0]);
 
-function __m_rotation(a, v) = 
+function _m_rotation_impl(a, v) = 
     (a == 0 || a == [0, 0, 0] || a == [0] || a == [0, 0]) ? [
         [1, 0, 0, 0],
         [0, 1, 0, 0],
diff --git a/src/matrix/m_rotation.scad b/src/matrix/m_rotation.scad
index 46385fe2..fbd946bd 100644
--- a/src/matrix/m_rotation.scad
+++ b/src/matrix/m_rotation.scad
@@ -8,6 +8,6 @@
 *
 **/
 
-use <matrix/__comm__/__m_rotation.scad>;
+use <matrix/_impl/_m_rotation_impl.scad>;
 
-function m_rotation(a, v) = __m_rotation(a, v);
\ No newline at end of file
+function m_rotation(a, v) = _m_rotation_impl(a, v);
\ No newline at end of file