diff --git a/avatar-realm-resource/src/main/java/org/gcube/keycloak/avatar/AvatarResource.java b/avatar-realm-resource/src/main/java/org/gcube/keycloak/avatar/AvatarResource.java
index 341ca5d..06d96f6 100644
--- a/avatar-realm-resource/src/main/java/org/gcube/keycloak/avatar/AvatarResource.java
+++ b/avatar-realm-resource/src/main/java/org/gcube/keycloak/avatar/AvatarResource.java
@@ -1,6 +1,7 @@
 package org.gcube.keycloak.avatar;
 
 import java.io.InputStream;
+import java.util.List;
 import java.util.Objects;
 
 import javax.ws.rs.Consumes;
@@ -72,7 +73,10 @@ public class AvatarResource extends AbstractAvatarResource {
             if (uriInfo.getQueryParameters().containsKey("account")) {
                 UriBuilder uriBuilder = RealmsResource.accountUrl(session.getContext().getUri().getBaseUriBuilder());
                 for (String parameterName : uriInfo.getQueryParameters().keySet()) {
-                    uriBuilder.queryParam(parameterName, uriInfo.getQueryParameters().get(parameterName));
+                    List<String> parameterValues = uriInfo.getQueryParameters().get(parameterName);
+                    for (String parameterValue : parameterValues) {
+                        uriBuilder.queryParam(parameterName, parameterValue);
+                    }
                 }
                 response = Response.seeOther(uriBuilder.build(auth.getSession().getRealm().getName())).build();
             } else {