diff --git a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploaderServiceImpl.java b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploaderServiceImpl.java
index cb62e83..287af32 100644
--- a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploaderServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploaderServiceImpl.java
@@ -85,7 +85,7 @@ public class WorkspaceUploaderServiceImpl extends RemoteServiceServlet implement
 			public void run() {
 				try {
 
-					logger.trace("Uploader: "+uploader.getClientUploadKey() +"is erasable?");
+					logger.trace("Uploader: "+uploader.getClientUploadKey() +", is erasable?");
 					WsUtil.eraseWorkspaceUploaderInSession(httpSession, uploader);
 				}
 				catch (Exception e) {
diff --git a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/shared/WorkspaceUploaderItem.java b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/shared/WorkspaceUploaderItem.java
index 55f121f..5a64634 100644
--- a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/shared/WorkspaceUploaderItem.java
+++ b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/shared/WorkspaceUploaderItem.java
@@ -229,6 +229,9 @@ public class WorkspaceUploaderItem implements Serializable{
 	 */
 	public Boolean isErasable() {
 
+		if(erasable==null)
+			return false;
+
 		return erasable;
 	}