diff --git a/share/man/man3/pthread_cond_destroy.3 b/share/man/man3/pthread_cond_destroy.3
index ca435ea76cf3..39eff9d55d28 100644
--- a/share/man/man3/pthread_cond_destroy.3
+++ b/share/man/man3/pthread_cond_destroy.3
@@ -63,6 +63,9 @@ The variable
 .Fa cond
 is locked by another thread.
 .El
+.Sh IMPLEMENTATION NOTES
+A condition variable can be destroyed immediately after all the threads that
+are blocked on it are awakened.
 .Sh SEE ALSO
 .Xr pthread_cond_broadcast 3 ,
 .Xr pthread_cond_init 3 ,