diff --git a/lang.csh b/lang.csh
index 94c4625..4e5f014 100644
--- a/lang.csh
+++ b/lang.csh
@@ -13,7 +13,7 @@ foreach config (/etc/locale.conf "${HOME}/.i18n")
 end
 
 if (${?LANG_backup}) then
-    set LANG="${LANG_backup}"
+    setenv LANG "${LANG_backup}"
 endif
 
 unset LANG_backup config