--- libev/ev_kqueue.c	2019/07/01 20:47:38	1.60
+++ libev/ev_kqueue.c	2019/08/17 05:30:16	1.61
@@ -170,7 +170,7 @@
 
   fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */
 
-  backend_mintime = 1e-9; /* apparently, they did the right thing in freebsd */
+  backend_mintime = EV_TS_CONST (1e-9); /* apparently, they did the right thing in freebsd */
   backend_modify  = kqueue_modify;
   backend_poll    = kqueue_poll;