diff --git a/package.json b/package.json
index c5e5a10..0460835 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@swrlab/node-storage-wrapper",
-	"version": "0.0.8",
+	"version": "0.0.9",
 	"description": "Wrapping AWS S3, GCP GCS, file storage",
 	"main": "./src/index.js",
 	"engines": {
diff --git a/src/index.js b/src/index.js
index 0815181..6aa2f51 100644
--- a/src/index.js
+++ b/src/index.js
@@ -12,7 +12,7 @@ const { Storage } = require('@google-cloud/storage');
 // create wrapper
 function StorageWrapper(config) {
 	// check config
-	if (!config || !config.gs || !config.s3) {
+	if (!config || !config.gs) {
 		return Promise.reject('storage config invalid');
 	}
 
@@ -26,8 +26,10 @@ function StorageWrapper(config) {
 	this.sdk.gs = new Storage(config.gs);
 
 	// load aws sdk
-	AWS.config.loadFromPath(config.s3);
-	this.sdk.s3 = new AWS.S3();
+	if (config.s3) {
+		AWS.config.loadFromPath(config.s3);
+		this.sdk.s3 = new AWS.S3();
+	}
 
 	// configure logging
 	this.config = {