diff --git a/qw/source/sv_main.c b/qw/source/sv_main.c
index 788844875..6d7d29558 100644
--- a/qw/source/sv_main.c
+++ b/qw/source/sv_main.c
@@ -36,6 +36,15 @@ static const char rcsid[] =
 #ifdef HAVE_STRINGS_H
 # include <strings.h>
 #endif
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
 #ifdef HAVE_ARPA_INET_H
 # include <arpa/inet.h>
 #endif