diff --git a/src/library/grDevices/man/nclass.Rd b/src/library/grDevices/man/nclass.Rd
index c6a880449d7..2ee4012bf58 100644
--- a/src/library/grDevices/man/nclass.Rd
+++ b/src/library/grDevices/man/nclass.Rd
@@ -4,6 +4,7 @@
 % Distributed under GPL 2 or later
 
 \name{nclass}
+\alias{nclass}
 \alias{nclass.Sturges}
 \alias{nclass.scott}
 \alias{nclass.FD}