diff --git a/package.json b/package.json
index eb0e529..7ac50c5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@swrlab/node-storage-wrapper",
-	"version": "0.2.0",
+	"version": "0.2.1",
 	"description": "Wrapping AWS S3, GCP GCS, file storage",
 	"main": "./src/index.js",
 	"engines": {
diff --git a/src/save.js b/src/save.js
index 2ca3e9b..4eceedc 100644
--- a/src/save.js
+++ b/src/save.js
@@ -37,7 +37,7 @@ module.exports = async function (uri, buffer, logPrefix) {
 			path = structure.join('/');
 
 			// log progress
-			this.sdk.log(this, 'log', [logPrefix ? logPrefix : undefined, 'storage.save.s3 >', uri]);
+			this.sdk.log(this, 'log', logPrefix.concat(['storage.save.s3 >', uri]));
 
 			// upload to aws
 			await this.sdk.s3
@@ -61,7 +61,7 @@ module.exports = async function (uri, buffer, logPrefix) {
 			await saveLocalFile(this, tempFilePath, buffer);
 
 			// log progress
-			this.sdk.log(this, 'log', [logPrefix ? logPrefix : undefined, 'storage.save.gs >', uri]);
+			this.sdk.log(this, 'log', logPrefix.concat(['storage.save.gs >', uri]));
 
 			// upload file to gcs
 			await this.sdk.gs.bucket(bucket).upload(tempFilePath, {
@@ -79,7 +79,7 @@ module.exports = async function (uri, buffer, logPrefix) {
 			// local file
 
 			// log progress
-			this.sdk.log(this, 'log', [logPrefix ? logPrefix : undefined, 'storage.save.local >', uri]);
+			this.sdk.log(this, 'log', logPrefix.concat(['storage.save.local >', uri]));
 
 			// save file
 			let file = await saveLocalFile(this, uri, buffer);