diff -r 35ceb74fe53e -r 6ad8cdcd88d9 src/mathfunctions.h
--- a/src/mathfunctions.h	Thu Feb 23 20:06:22 2017 +0200
+++ b/src/mathfunctions.h	Thu Feb 23 20:18:39 2017 +0200
@@ -18,6 +18,7 @@
 
 #pragma once
 #include "main.h"
+#include "hierarchyelement.h"
 
 
 enum RotationPoint