diff --git a/modules/01-system-settings.sh b/modules/01-system-settings.sh
index 377118f..8d7ffaa 100755
--- a/modules/01-system-settings.sh
+++ b/modules/01-system-settings.sh
@@ -101,11 +101,11 @@ function configure_system() {
 }
 
 function getUsage() {
-  local text
+  local cmdName=$1 text=''
   read -r -d '' text <<- USAGE
 	Usage:
-	  $0 show-questions
-	  $0 [-v] [-d FILE] --hostname NAME --timezone ZONE
+	  $cmdName show-questions
+	  $cmdName [-v] [-d FILE] --hostname NAME --timezone ZONE
 	
 	Set energy, basic network and host preferences.
 	
@@ -115,7 +115,7 @@ function getUsage() {
 	  -d FILE, --logfile FILE  Print log message to logfile instead of stdout.
 	  -v, --verbose            Be more verbose.
 	----
-	$0 0.1.0
+	$cmdName 0.1.0
 	Copyright (C) 2022 Rezart Qelibari, Astzweig GmbH & Co. KG
 	License EUPL-1.2. There is NO WARRANTY, to the extent permitted by law.
 	USAGE
@@ -125,5 +125,5 @@ function getUsage() {
 if [[ "${ZSH_EVAL_CONTEXT}" == toplevel ]]; then
   test -f "${ASTZWEIG_MACOS_SYSTEM_LIB}" || { echo 'This module requires macos-system library. Please run again with macos-system library provieded as a path in ASTZWEIG_MACOS_SYSTEM_LIB env variable.'; return 10 }
   source "${ASTZWEIG_MACOS_SYSTEM_LIB}"
-  module_main "$@"
+  module_main $0 "$@"
 fi
diff --git a/modules/lib.sh b/modules/lib.sh
index b35dbcb..5314e8d 100644
--- a/modules/lib.sh
+++ b/modules/lib.sh
@@ -35,10 +35,12 @@ function showQuestions() {
 }
 
 function module_main() {
+  local cmdName=${1:t}
+  shift
   autoloadZShLib || return
   checkPrerequisites || return
-  eval "`getUsage | docopts -f -V - -h - : "$@"`"
-  [ $# -le 1 ] && return
+  eval "`getUsage $cmdName | docopts -f -V - -h - : "$@"`"
+  [ $# -lt 1 ] && return
   configureLogging
   [ "${show_questions}" = true ] && { showQuestions; return }
   configure_system