diff --git a/include/modules/network.hpp b/include/modules/network.hpp
index 8e06aa65..8ec6b6df 100644
--- a/include/modules/network.hpp
+++ b/include/modules/network.hpp
@@ -8,6 +8,8 @@
 #include <netlink/netlink.h>
 #include <sys/epoll.h>
 
+#include <optional>
+
 #include "ALabel.hpp"
 #include "util/sleeper_thread.hpp"
 #ifdef WANT_RFKILL