diff --git a/cd.sh b/cd.sh
index 7a780e3..b5ddf8d 100644
--- a/cd.sh
+++ b/cd.sh
@@ -3,8 +3,10 @@
 [ "${CD_DNS}" ] || CD_DNS="\
 9.9.9.9 \
 "
-# modules
-set "cd" "rwx"
+CD_PYTHON_MODULES="\
+cd \
+rwx \
+"
 
 # steps
 cd_main () {
@@ -24,8 +26,8 @@ cd_main () {
     cd_install_git
     cd_install_python
     cd_clean_packages_cache
-    cd_install_python_modules "${@}"
-    cd_execute_python_module "${@}"
+    cd_install_python_modules ${CD_PYTHON_MODULES}
+    cd_execute_python_module ${CD_PYTHON_MODULES}
 }
 
 # functions
@@ -330,4 +332,4 @@ local text="${2}"
 }
 
 # main
-cd_main "${@}"
+cd_main