--- SFML-1.6/src/SFML/Window/Linux/Joystick.cpp
+++ SFML-1.6/src/SFML/Window/Linux/Joystick.cpp
@@ -27,7 +27,7 @@
 ////////////////////////////////////////////////////////////
 #include <SFML/Window/Joystick.hpp>
 #include <sstream>
-
+#include <unistd.h>
 
 namespace sf
 {