diff --git a/src/main/java/org/gcube/data/access/storagehub/AuthorizationChecker.java b/src/main/java/org/gcube/data/access/storagehub/AuthorizationChecker.java
index a503f6e..ca235c8 100644
--- a/src/main/java/org/gcube/data/access/storagehub/AuthorizationChecker.java
+++ b/src/main/java/org/gcube/data/access/storagehub/AuthorizationChecker.java
@@ -47,7 +47,7 @@ public class AuthorizationChecker {
 			AccessControlEntry[] entries = accessControlList.getAccessControlEntries();
 
 			for (AccessControlEntry entry: entries) {
-				Authorizable authorizable = ((JackrabbitSession) session).getUserManager().getAuthorizable(id);
+				Authorizable authorizable = ((JackrabbitSession) session).getUserManager().getAuthorizable(entry.getPrincipal());
 				if (!authorizable.isGroup() && entry.getPrincipal().getName().equals(login)) return;
 				if (authorizable.isGroup() && ((Group) authorizable).isMember(entry.getPrincipal())) return;
 			}
diff --git a/src/main/java/org/gcube/data/access/storagehub/services/GroupManager.java b/src/main/java/org/gcube/data/access/storagehub/services/GroupManager.java
index ce423de..2aee1c8 100644
--- a/src/main/java/org/gcube/data/access/storagehub/services/GroupManager.java
+++ b/src/main/java/org/gcube/data/access/storagehub/services/GroupManager.java
@@ -103,7 +103,7 @@ public class GroupManager {
 			Group createdGroup = usrManager.createGroup(group);
 			groupId = createdGroup.getID();
 
-			createVreFolder(groupId, session, accessType);
+			createVreFolder(groupId, session, accessType!=null?accessType:AccessType.WRITE_OWNER);
 
 			session.save();
 		}catch(Exception e) {
diff --git a/src/main/webapp/WEB-INF/README b/src/main/webapp/WEB-INF/README
index c6e8c12..a32cb8e 100644
--- a/src/main/webapp/WEB-INF/README
+++ b/src/main/webapp/WEB-INF/README
@@ -25,7 +25,7 @@ no. 654119), SoBigData (grant no. 654024), AGINFRA PLUS (grant no. 731001).
 Version
 --------------------------------------------------
  
-1.0.5-SNAPSHOT (2019-04-11)
+1.0.5-SNAPSHOT (2019-04-12)
  
 Please see the file named "changelog.xml" in this directory for the release notes.