--- libproxy/test/get-pac-test.cpp
+++ libproxy/test/get-pac-test.cpp
@@ -3,6 +3,7 @@
 #include <sstream>
 #include <string>
 
+#include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
