--- a/src/Document.h	Sun Mar 09 21:14:07 2014 +0200
+++ b/src/Document.h	Mon Mar 10 00:53:39 2014 +0200
@@ -27,6 +27,7 @@
 class OpenProgressDialog;
 class LDDocumentPointer;
 struct LDGLData;
+class GLCompiler;
 
 namespace LDPaths
 {