diff --git a/docs/man/xentop.1.pod b/docs/man/xentop.1.pod
index 593a484ce7..db64ceb694 100644
--- a/docs/man/xentop.1.pod
+++ b/docs/man/xentop.1.pod
@@ -5,7 +5,7 @@ xentop - displays real-time information about a Xen system and domains
 =head1 SYNOPSIS
 
 B<xentop> [B<-h>] [B<-V>] [B<-d>SECONDS] [B<-n>] [B<-r>] [B<-v>] [B<-f>]
-[B<-b>] [B<-i>ITERATIONS] [B<-z>]
+[B<-b>] [B<-i>ITERATIONS] [B<-z>] [B<-p>]
 
 =head1 DESCRIPTION
 
@@ -61,6 +61,10 @@ maximum number of iterations xentop should produce before ending
 
 display dom0 first, ignoring interactive sorting
 
+=item B<-p>, B<--pcpus>
+
+display physical CPU utilization metrics
+
 =back
 
 =head1 INTERACTIVE COMMANDS