diff --git a/src/main/java/org/gcube/oidc/rest/OpenIdConnectRESTHelper.java b/src/main/java/org/gcube/oidc/rest/OpenIdConnectRESTHelper.java
index 484fdf3..a963f3d 100644
--- a/src/main/java/org/gcube/oidc/rest/OpenIdConnectRESTHelper.java
+++ b/src/main/java/org/gcube/oidc/rest/OpenIdConnectRESTHelper.java
@@ -207,6 +207,10 @@ public class OpenIdConnectRESTHelper {
     }
 
     public static byte[] getUserAvatar(URL avatarURL, JWTToken token) {
+        return getUserAvatar(avatarURL, token != null ? token.getAccessTokenAsBearer() : null);
+    }
+
+    public static byte[] getUserAvatar(URL avatarURL, String authorization) {
         logger.debug("Getting user avatar from URL: {}", avatarURL);
         ByteArrayOutputStream buffer;
         try {
@@ -214,9 +218,8 @@ public class OpenIdConnectRESTHelper {
             conn.setRequestMethod("GET");
             conn.setDoOutput(false);
             conn.setDoInput(true);
-            conn.setRequestProperty("Accept", "image/png, image/jpeg, image/gif");
-            if (token != null) {
-                String authorization = token.getAccessTokenAsBearer();
+            conn.setRequestProperty("Accept", "image/png, image/gif");
+            if (authorization != null) {
                 logger.debug("Adding authorization header as: {}", authorization);
                 conn.setRequestProperty("Authorization", authorization);
             }