diff --git a/scripts/upgrade b/scripts/upgrade
index e76e67f..8bda4ba 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -30,19 +30,19 @@ then
 	ynh_script_progression --message="Upgrading source files..."
 
 	# Download, check integrity, uncompress and patch the source from app.src
-	mv "$install_dir" "$install_dir.old"
+	#mv "$install_dir" "$install_dir.old"
 
-	ynh_setup_source --dest_dir="$install_dir"
+	ynh_setup_source --dest_dir="$install_dir" --keep="galette/config/config.inc.php galette/data galette/plugins"
 
 	# when running automatic tests, there is no config.inc.php
-	if [ -e "$install_dir.old/galette/config/config.inc.php" ]; then
-	    cp "$install_dir.old/galette/config/config.inc.php" "$install_dir/galette/config/config.inc.php"
-	    cp -r "$install_dir.old/galette/data" "$install_dir/galette/data"
-	    cp -r "$install_dir.old/galette/plugins" "$install_dir/galette/plugins"
-	fi
+	#if [ -e "$install_dir.old/galette/config/config.inc.php" ]; then
+	#    cp "$install_dir.old/galette/config/config.inc.php" "$install_dir/galette/config/config.inc.php"
+	#    cp -r "$install_dir.old/galette/data" "$install_dir/galette/data"
+	#    cp -r "$install_dir.old/galette/plugins" "$install_dir/galette/plugins"
+	#fi
 
 	# delete temp directory
-#REMOVEME? 	ynh_secure_remove "$install_dir.old"
+	#ynh_secure_remove "$install_dir.old"
 fi
 
 chmod -R o-rwx "$install_dir"