diff --git a/csh.cshrc b/csh.cshrc
index 50d0c6e..d4a5c28 100644
--- a/csh.cshrc
+++ b/csh.cshrc
@@ -36,5 +36,4 @@ setenv EDITOR "vim"
 setenv LESS "-EfmrSwX"
 setenv LSCOLORS "gxfxcxdxbxegedabagacad"
 setenv PAGER "most"
-setenv PERL_CPANM_OPT="--mirror http://cpan.nctu.edu.tw/ --mirror http://cpan.cpantesters.org/"
 setenv VISUAL $EDITOR