diff --git a/arch/sim/src/up_wpcap.c b/arch/sim/src/up_wpcap.c
index 6225751db6a..69c808c5327 100644
--- a/arch/sim/src/up_wpcap.c
+++ b/arch/sim/src/up_wpcap.c
@@ -50,6 +50,7 @@
 #include <winsock2.h>
 #include <iphlpapi.h>
 
+#include <sys/time.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <malloc.h>