diff --git a/plugins/domains/commands b/plugins/domains/commands
index 5b2018369..1ed2fde7f 100755
--- a/plugins/domains/commands
+++ b/plugins/domains/commands
@@ -1,35 +1,11 @@
 #!/usr/bin/env bash
 [[ " help domains:help " == *" $1 "* ]] || exit "$DOKKU_NOT_IMPLEMENTED_EXIT"
+source "$PLUGIN_AVAILABLE_PATH/domains/internal-functions"
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 
 case "$1" in
   help | domains:help)
-    help_content_func () {
-      declare desc="return domains plugin help content"
-      cat<<help_content
-    domains [<app>], List domains
-    domains:add <app> <domain> [<domain> ...], Add domains to app
-    domains:add-global <domain> [<domain> ...], Add global domain names
-    domains:clear <app>, Clear all domains for app
-    domains:disable <app>, Disable VHOST support
-    domains:enable <app>, Enable VHOST support
-    domains:remove <app> <domain> [<domain> ...], Remove domains from app
-    domains:remove-global <domain> [<domain> ...], Remove global domain names
-    domains:set <app> <domain> [<domain> ...], Set domains for app
-    domains:set-global <domain> [<domain> ...], Set global domain names
-help_content
-    }
-
-    if [[ $1 = "domains:help" ]] ; then
-        echo -e 'Usage: dokku domains[:COMMAND]'
-        echo ''
-        echo 'Manage vhost domains used by the Dokku proxy.'
-        echo ''
-        echo 'Additional commands:'
-        help_content_func | sort | column -c2 -t -s,
-    else
-        help_content_func
-    fi
+    domains_help_cmd "$@"
     ;;
 
   *)
diff --git a/plugins/domains/internal-functions b/plugins/domains/internal-functions
new file mode 100755
index 000000000..33ab2dd1c
--- /dev/null
+++ b/plugins/domains/internal-functions
@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+
+domains_help_content_func () {
+    declare desc="return domains plugin help content"
+    cat<<help_content
+    domains [<app>], List domains
+    domains:add <app> <domain> [<domain> ...], Add domains to app
+    domains:add-global <domain> [<domain> ...], Add global domain names
+    domains:clear <app>, Clear all domains for app
+    domains:disable <app>, Disable VHOST support
+    domains:enable <app>, Enable VHOST support
+    domains:remove <app> <domain> [<domain> ...], Remove domains from app
+    domains:remove-global <domain> [<domain> ...], Remove global domain names
+    domains:set <app> <domain> [<domain> ...], Set domains for app
+    domains:set-global <domain> [<domain> ...], Set global domain names
+help_content
+}
+
+domains_help_cmd() {
+  if [[ $1 = "domains:help" ]] ; then
+    echo -e 'Usage: dokku domains[:COMMAND]'
+    echo ''
+    echo 'Manage vhost domains used by the Dokku proxy.'
+    echo ''
+    echo 'Additional commands:'
+    domains_help_content_func | sort | column -c2 -t -s,
+  elif [[ $(ps -o command= $PPID) == *"--all"* ]]; then
+    domains_help_content_func
+  else
+    cat<<help_desc
+    domains, Manage vhost domains used by the Dokku proxy
+help_desc
+  fi
+}