diff --git a/src/main/target/SITL/udplink.c b/src/main/target/SITL/udplink.c
index 312844f25f..3f71b11f17 100644
--- a/src/main/target/SITL/udplink.c
+++ b/src/main/target/SITL/udplink.c
@@ -9,6 +9,7 @@
 
 #include <fcntl.h>
 #include <sys/socket.h>
+#include <sys/time.h>
 
 #include "udplink.h"