diff --git a/doc/nethack.6 b/doc/nethack.6
index b3abff111..0e01bf061 100644
--- a/doc/nethack.6
+++ b/doc/nethack.6
@@ -70,7 +70,7 @@ nethack \- Exploring The Mazes of Menace
 ]
 .br
 [
-.BI \-\-nethackrc: RC-file
+.BI \-\-nethackrc: rc-file
 |
 .B \-\-no\-nethackrc
 ]
@@ -381,9 +381,9 @@ specified in the run-time configuration file.
 NetHack's #version command shows available interfaces.
 .PP
 The
-.BI \-\-nethackrc: RC-file
+.BI \-\-nethackrc: rc-file
 option will use
-.I RC-file
+.I rc-file
 instead of the default run-time configuration file
 .RI "(typically " \*~/.nethackrc ")"
 and the