diff --git a/sh/alias/chmod.sh b/sh/alias/chmod.sh
index 89b8bd7..1c55b40 100644
--- a/sh/alias/chmod.sh
+++ b/sh/alias/chmod.sh
@@ -1,12 +1,14 @@
 # change mode to directory
-cmd() {
+cmd() { sh_a__change_mode_directory "${@}"; }
+sh_a__change_mode_directory() {
 	chmod \
 		"755" \
 		"${@}"
 }
 
 # change mode to file
-cmf() {
+cmf() { sh_a__change_mode_file "${@}"; }
+sh_a__change_mode_file() {
 	chmod \
 		"644" \
 		"${@}"