diff --git a/include/ac/socket.h b/include/ac/socket.h
index ad11cec8d7..415f5a265f 100644
--- a/include/ac/socket.h
+++ b/include/ac/socket.h
@@ -26,7 +26,10 @@
 #endif
 
 #include <netinet/in.h>
+
+#ifdef HAVE_ARPA_INET_H
 #include <arpa/inet.h>
+#endif
 
 #ifdef HAVE_ARPA_NAMESER_H
 #include <arpa/nameser.h>