diff --git a/scripts/_common.sh b/scripts/_common.sh
index 7912aa4..d7982dd 100755
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -17,3 +17,16 @@ nodejs_version=14
 #=================================================
 # FUTURE OFFICIAL HELPERS
 #=================================================
+
+# Execute a command as another user
+# usage: ynh_exec_as USER COMMAND [ARG ...]
+ynh_exec_as() {
+  local USER=$1
+  shift 1
+
+  if [[ $USER = $(whoami) ]]; then
+    eval "$@"
+  else
+    sudo -u "$USER" "$@"
+  fi
+}
diff --git a/scripts/install b/scripts/install
index 9ef0498..6c61460 100755
--- a/scripts/install
+++ b/scripts/install
@@ -87,7 +87,7 @@ ynh_add_nginx_config
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
-ynh_script_progression --message="Configuring system user ..." --weight=1
+ynh_script_progression --message="Configuring system user..." --weight=1
 
 # Create a system user
 ynh_system_user_create --username=$app --home_dir=$final_path
@@ -99,7 +99,7 @@ ynh_script_progression --message="tiddlywiki..." --weight=2
 
 pushd $final_path
 	#$nodejs_path/node $final_path/tiddlywiki mywiki --init server
-	ynh_exec_as $app env "$ynh_node_load_PATH" $final_path/ mywiki --init server
+	ynh_exec_as $app env "$ynh_node_load_PATH" $final_path/tiddlywiki mywiki --init server
 popd
 
 #=================================================