diff --git a/src/matrix/__comm__/__m_rotation.scad b/src/matrix/__comm__/__m_rotation.scad
index 4ce85d6a..be8724ae 100644
--- a/src/matrix/__comm__/__m_rotation.scad
+++ b/src/matrix/__comm__/__m_rotation.scad
@@ -1,3 +1,5 @@
+use <__comm__/__to_ang_vect.scad>;
+
 function __m_rotation_q_rotation(a, v) = 
     let(
         half_a = a / 2,
diff --git a/src/matrix/m_rotation.scad b/src/matrix/m_rotation.scad
index c40a554b..46385fe2 100644
--- a/src/matrix/m_rotation.scad
+++ b/src/matrix/m_rotation.scad
@@ -8,7 +8,6 @@
 *
 **/
 
-include <__comm__/__to_ang_vect.scad>;
-include <matrix/__comm__/__m_rotation.scad>;
+use <matrix/__comm__/__m_rotation.scad>;
 
 function m_rotation(a, v) = __m_rotation(a, v);
\ No newline at end of file