diff --git a/net/socket/sendto.c b/net/socket/sendto.c
index 26f88f6bdb..d1236efb0e 100644
--- a/net/socket/sendto.c
+++ b/net/socket/sendto.c
@@ -45,6 +45,7 @@
 #include <errno.h>
 #include <debug.h>
 
+#include <nuttx/pthread.h>
 #include <nuttx/net/net.h>
 
 #include "udp/udp.h"