diff --git a/scripts/install b/scripts/install
index d5d8b59..93c389b 100644
--- a/scripts/install
+++ b/scripts/install
@@ -75,9 +75,11 @@ chown $app:www-data "$install_dir/include/ost-config.php"
 #=================================================
 ynh_script_progression --message="Building plugins..." --weight=1
 
-ynh_exec_as $app mkdir -p "$install_dir/include/plugins/build/.config/composer"
-export COMPOSER_HOME="$install_dir/include/plugins/build/.config/composer"
+mkdir -p "$install_dir/include/plugins/build/.config/composer"
+chmod 666 "$install_dir/include/plugins/build/.config/composer"
+chown $app:www-data "$install_dir/include/plugins/build/.config/composer"
 
+export COMPOSER_HOME="$install_dir/include/plugins/build/.config/composer"
 pushd "$install_dir/include/plugins/build"
 	ynh_exec_warn_less ynh_exec_as $app php$phpversion make.php hydrate
 	ynh_exec_warn_less ynh_exec_as $app php$phpversion -dphar.readonly=0 make.php build auth-cas