diff --git a/share/man/man9/sleepqueue.9 b/share/man/man9/sleepqueue.9
index 64dfc3bdee5..4a1b48fc766 100644
--- a/share/man/man9/sleepqueue.9
+++ b/share/man/man9/sleepqueue.9
@@ -269,10 +269,28 @@ The sleep queue chain associated with argument
 .Fa wchan
 needs to have been locked with a prior call to
 .Fn sleepq_lock .
+.Pp
 The
 .Fa pri
 argument is used to set the priority of the thread when it is awakened.
-If it is set to zero, the thread's priority is left alone.
+If
+.Fa pri
+is zero, the threads that are signaled will awake with priority unchanged.
+If a thread is in priority class
+.Dv TIMESHARE ,
+and a thread has lower
+.Dv TIMESHARE
+priority
+.Po larger value than
+.Fa pri
+.Pc
+that thread's priority will be set to
+.Fa pri .
+.Fa pri
+must be zero or between
+.Dv MIN_PRI
+and
+.Dv MAX_PRI .
 .Pp
 When the thread is resumed,
 the wait functions return a non-zero value if the thread was awakened due to