diff --git a/src/main.cc b/src/main.cc
index c31a5c04..54e4aae9 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -43,6 +43,7 @@
 #include <sstream>
 #include <string>
 #include <inttypes.h>
+#include <unistd.h>
 #include <sigc++/adaptors/bind.h>
 #include <torrent/http.h>
 #include <torrent/torrent.h>