diff --git a/usr.sbin/watch/watch.c b/usr.sbin/watch/watch.c
index d594ee0c7e6..65535407b53 100644
--- a/usr.sbin/watch/watch.c
+++ b/usr.sbin/watch/watch.c
@@ -36,6 +36,7 @@ static const char rcsid[] =
 #include <sysexits.h>
 #include <termcap.h>
 #include <termios.h>
+#include <time.h>
 #include <unistd.h>
 
 #define MSG_INIT	"Snoop started."