diff -r 35ceb74fe53e -r 6ad8cdcd88d9 src/lddocument.h
--- a/src/lddocument.h	Thu Feb 23 20:06:22 2017 +0200
+++ b/src/lddocument.h	Thu Feb 23 20:18:39 2017 +0200
@@ -23,6 +23,7 @@
 #include "editHistory.h"
 #include "glShared.h"
 #include "model.h"
+#include "hierarchyelement.h"
 
 struct LDGLData;
 class DocumentManager;