--- src/helpers/System.cpp.old	2012-06-12 11:01:24.332083600 +0200
+++ src/helpers/System.cpp	2012-06-12 11:01:35.335083715 +0200
@@ -24,6 +24,7 @@
 #include "Log.h"
 #include "VExcept.h"
 #include <sstream>
+#include <unistd.h>
 
 std::vector<std::string>* System::getDisplayModes(int windowed) {
     std::vector<std::string>* modes = new std::vector<std::string>;