diff --git a/sh/main.sh b/sh/main.sh
index f727013..b761e6e 100644
--- a/sh/main.sh
+++ b/sh/main.sh
@@ -7,7 +7,7 @@ SH_MAIN="${SH_ROOT}/main.sh"
 
 [ -n "${ENV}" ] || export ENV="${SH_MAIN}"
 
-main_commands() {
+_sh_main_commands() {
 	local file="${1}"
 	grep "()" "${file}" |
 		cut --delimiter "(" --fields 1
@@ -35,7 +35,7 @@ main_source_directory() {
 			module="${path}/${module}"
 			if [ "${module}" != "${ENV}" ]; then
 				. "${module}"
-				cmd="$(main_commands "${module}")"
+				cmd="$(_sh_main_commands "${module}")"
 				if [ -n "${cmd}" ]; then
 					[ -n "${CMD}" ] && CMD="${CMD}
 "