.Nd Calculate temporal milestones
.Sh SYNOPSIS
.Fd #include <dispatch/dispatch.h>
-.Vt static const dispatch_time_t DISPATCH_TIME_NOW = 0 ;
+.Vt static const dispatch_time_t DISPATCH_TIME_NOW = 0ull ;
.Vt static const dispatch_time_t DISPATCH_TIME_FOREVER = ~0ull ;
.Ft dispatch_time_t
.Fo dispatch_time