diff --git a/how-to-clean-uninstall-macos-apps-using-appcleaner-open-source-alternative/app-cleaner.sh b/how-to-clean-uninstall-macos-apps-using-appcleaner-open-source-alternative/app-cleaner.sh
index b2f5e70..6649178 100755
--- a/how-to-clean-uninstall-macos-apps-using-appcleaner-open-source-alternative/app-cleaner.sh
+++ b/how-to-clean-uninstall-macos-apps-using-appcleaner-open-source-alternative/app-cleaner.sh
@@ -1,8 +1,8 @@
 #! /bin/bash
 
-if [ -z "$1" ]; then
+if [ -z $1 ] || [ $1 = "--help" ]; then
   printf "%s\n" "Usage: app-cleaner.sh /path/to/app.app"
-  exit 1
+  exit 0
 fi
 
 IFS=$'\n'
diff --git a/how-to-make-sure-app-is-not-running-in-the-background-on-macos/README.md b/how-to-make-sure-app-is-not-running-in-the-background-on-macos/README.md
index 591a8dc..635baca 100644
--- a/how-to-make-sure-app-is-not-running-in-the-background-on-macos/README.md
+++ b/how-to-make-sure-app-is-not-running-in-the-background-on-macos/README.md
@@ -85,9 +85,9 @@ function kill-apps() {
   IFS=$'\n'
   red=$(tput setaf 1)
   normal=$(tput sgr0)
-  if [ -z "$1" ]; then
+  if [ -z $1 ] || [ $1 = "--help" ]; then
     printf "%s\n" "Usage: kill-apps string"
-    return 1
+    return 0
   fi
   printf "%s\n" "Finding apps that match “$1”…"
   sleep 1