diff --git a/TODO b/TODO
index 24b22c2..945da02 100644
--- a/TODO
+++ b/TODO
@@ -1,5 +1,4 @@
 TODO:
 
 - Clean the code with google styleguide
-- Migrate to a better build system
 - Integrate patches from various contributors
diff --git a/src/film.cc b/src/film.cc
index 8455a3a..1d21e50 100644
--- a/src/film.cc
+++ b/src/film.cc
@@ -14,6 +14,10 @@
  * johmathe $ $Date: 2010-10-01 01:35:11 +0200 (Fri, 01 Oct 2010) $
  */
 
+#ifndef UINT64_C
+#define UINT64_C(c) (c ## ULL)
+#endif
+
 #ifdef WXWIDGETS
 #include <wx/msgdlg.h>
 #include <wx/thread.h>