Index: scorched/src/client/client/SecureID.cpp
===================================================================
--- scorched/src/client/client/SecureID.cpp	(revision 549)
+++ scorched/src/client/client/SecureID.cpp	(working copy)
@@ -75,6 +75,7 @@
 
 #include <sys/ioctl.h>
 #include <net/if.h>
+#include <unistd.h>
 
 std::string SecureID::GetPrivateKey(void)
 {