Fix compile problem with boxes.cpp

svn-id: r4337

1 files changed, 1 insertions, 0 deletions

diff --git a/boxes.cpp b/boxes.cpp
index a7063a31b9..b3ebceed6e 100644
--- a/boxes.cpp
+++ b/boxes.cpp
@@ -23,6 +23,7 @@
 #include "stdafx.h"
 #include "scumm.h"
 #include "actor.h"
+#include <math.h>
 
 byte Scumm::getMaskFromBox(int box)
 {