diff --git a/provision.sh b/provision.sh
index 6040967..d1912b4 100755
--- a/provision.sh
+++ b/provision.sh
@@ -2,39 +2,42 @@
 
 usage() {
     printf '%s\n'   "Usage:"
-    printf '$ %s\n' "$0"
+    printf '$ %s\n' "$0 [-h|--help]"
     printf '$ %s\n' "$0 os"
-    printf '$ %s\n' "$0 services [SINGLE_SERVICE]"
+    printf '$ %s\n' "$0 docker"
     printf '$ %s\n' "$0 reboot [-f|--force]"
+    printf '$ %s\n' "$0 services [SINGLE_SERVICE]"
+}
+
+install_modules() {
+    if [ -z "$(ansible-galaxy collection list community.general 2>/dev/null)" ]; then
+        ansible-galaxy collection install community.general
+    fi
 }
 
 cd "$(dirname "$0")" || exit 255
 BASE_CMD="ansible-playbook playbook.yml --ask-vault-pass --ask-become-pass"
 
-if [ -z "$(ansible-galaxy collection list community.general 2>/dev/null)" ]; then
-    ansible-galaxy collection install community.general
-fi
-
 if [ -z "$1" ]; then
     $BASE_CMD
 else
     case $1 in
-        os)
-            $BASE_CMD --tags os ;;
-        docker)
-            $BASE_CMD --tags docker ;;
-        services)
-            if [ -z "$2" ]; then
-                $BASE_CMD --tags services
+        os|docker)
+            install_modules && $BASE_CMD --tags "$1" ;;
+        reboot)
+            install_modules
+            if [ "$2" = "-f" ] || [ "$2" = "--force" ]; then
+                $BASE_CMD --tags "$1" --extra-vars "force_reboot=true"
             else
-                $BASE_CMD --tags services --extra-vars "single_service=$2"
+                $BASE_CMD --tags "$1"
             fi
             ;;
-        reboot)
-            if [ "$2" = "-f" ] || [ "$2" = "--force" ]; then
-                $BASE_CMD --tags reboot --extra-vars "force_reboot=true"
+        services)
+            install_modules
+            if [ -z "$2" ]; then
+                $BASE_CMD --tags "$1"
             else
-                $BASE_CMD --tags reboot
+                $BASE_CMD --tags "$1" --extra-vars "single_service=$2"
             fi
             ;;
         -h|--help)