diff --git a/csh.cshrc b/csh.cshrc
index 7672b8f..d4bd8cf 100644
--- a/csh.cshrc
+++ b/csh.cshrc
@@ -33,7 +33,7 @@ set prompt = "%B%m%b [%/] -%n- "
 set savehist = 5000
 #
 setenv EDITOR "/usr/local/bin/vim"
-setenv LESS "-EfmrSw"
+setenv LESS "-EfmrSwX"
 setenv LSCOLORS "gxfxcxdxbxegedabagacad"
 setenv PAGER "/usr/local/bin/most"
 setenv PERL_CPANM_OPT="--mirror http://cpan.nctu.edu.tw/"