diff --git a/usr.sbin/pmcstat/pmcstat.c b/usr.sbin/pmcstat/pmcstat.c
index b9c8e37ce349..1ae47403d12c 100644
--- a/usr.sbin/pmcstat/pmcstat.c
+++ b/usr.sbin/pmcstat/pmcstat.c
@@ -365,6 +365,8 @@ pmcstat_show_usage(void)
 	    "\t -F file\t write a system-wide callgraph (Kcachegrind format)"
 		" to \"file\"\n"
 	    "\t -G file\t write a system-wide callgraph to \"file\"\n"
+	    "\t -I don't resolve leaf function but show address instead" 
+	    "\t -L \"tid\" filter on thread id in post-processing"
 	    "\t -M file\t print executable/gmon file map to \"file\"\n"
 	    "\t -N\t\t (toggle) capture callchains\n"
 	    "\t -O file\t send log output to \"file\"\n"