diff --git a/conf/htconfig.sample.php b/conf/htconfig.sample.php
index fad9a67..db3454a 100644
--- a/conf/htconfig.sample.php
+++ b/conf/htconfig.sample.php
@@ -70,7 +70,7 @@ App::$config['system']['admin_email'] = '__EMAIL__';
 
 // Location of PHP command line processor
 
-App::$config['system']['php_path'] = '/usr/bin/php__PHPVERSION__';
+App::$config['system']['php_path'] = 'php__PHPVERSION__';
 
 
 // Configure how we communicate with directory servers.
diff --git a/scripts/install b/scripts/install
index 86744c2..f156eb7 100755
--- a/scripts/install
+++ b/scripts/install
@@ -29,7 +29,7 @@ path_url="/"
 admin=$YNH_APP_ARG_ADMIN
 email=$(ynh_user_get_info --username=$admin --key=mail)
 upload="256M"
-random_string="$(ynh_string_random)$(ynh_string_random)$(ynh_string_random)"
+random_string=$(ynh_string_random --length=32)
 database=`expr $YNH_APP_ARG_DATABASE`
 
 app=$YNH_APP_INSTANCE_NAME
@@ -139,7 +139,7 @@ touch "$final_path/php.log"
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
-chmod -R 755 $final_path/store $final_path/cache
+chmod -R 775 $final_path/store $final_path/cache
 
 #=================================================
 # CREATE A  DATABASE