--- a/extcap/udpdump.c
+++ b/extcap/udpdump.c
@@ -56,6 +56,10 @@
 #include <wsutil/inet_addr.h>
 #include <wsutil/filesystem.h>
 
+#ifdef HAVE_SYS_TIME_H
+    #include <sys/time.h>
+#endif
+
 #define PCAP_SNAPLEN 0xffff
 
 #define UDPDUMP_DEFAULT_PORT 5555