diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6ed4b35..127d4cf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - "wo maintenance" command to perform server package update & cleanup
 - Support for Netdata on backend : https://server.hostname:22222/netdata/
 - New Stacks : composer and netdata
+- additional argument for letsencrypt : --hsts
+- wo.sh installer downloader script
 
 #### Changed
 
diff --git a/install b/install
index a5d3b41..0782d7a 100644
--- a/install
+++ b/install
@@ -382,12 +382,8 @@ wo_install_acme_sh() {
 # Now, finally, let's install WordOps
 wo_install() {
     {
-        rm -rf /tmp/easyengine
-        rm -rf /tmp/wordops
 
-        git clone -b "$wo_branch" https://github.com/WordOps/WordOps.git /tmp/wordops --quiet
-
-        cd /tmp/wordops || exit 1
+        cd /tmp/WordOps || exit 1
     } >> "$wo_install_log" 2>&1
     python3 setup.py install
 
diff --git a/wo.sh b/wo.sh
index 8160bac..a1bc421 100644
--- a/wo.sh
+++ b/wo.sh
@@ -23,14 +23,20 @@ fi
     apt-get update -qq && apt-get install git -qq
 } > /dev/null 2>&1
 
+if [ "${#}" = "0" ]; then
+    wo_branch=master
+else
+    wo_branch="$@"
+fi
+
 # update or clone wordops repositoru
 if [ -d /tmp/WordOps/.git ]; then
     git -C /tmp/WordOps pull origin master -q
 else
     rm -rf /tmp/WordOps
-    git clone https://github.com/WordOps/WordOps.git /tmp/WordOps -b "$@" -q
+    git clone https://github.com/WordOps/WordOps.git /tmp/WordOps -b "$wo_branch" -q
 fi
 
 if [ -x /tmp/WordOps/install ]; then
-/tmp/WordOps/install "$@"
+    /tmp/WordOps/install "$wo_branch"
 fi