diff --git a/osdep/LinuxNetLink.cpp b/osdep/LinuxNetLink.cpp
index 421da1f63..b0f2d84fb 100644
--- a/osdep/LinuxNetLink.cpp
+++ b/osdep/LinuxNetLink.cpp
@@ -13,6 +13,8 @@
 
 #include "../node/Constants.hpp"
 
+#include <cerrno>
+
 //#define ZT_NETLINK_TRACE
 
 #ifdef __LINUX__