diff --git a/src/main/java/org/gcube/applicationsupportlayer/social/AslNotificationManager.java b/src/main/java/org/gcube/applicationsupportlayer/social/AslNotificationManager.java
index d673dbd..f9c7963 100644
--- a/src/main/java/org/gcube/applicationsupportlayer/social/AslNotificationManager.java
+++ b/src/main/java/org/gcube/applicationsupportlayer/social/AslNotificationManager.java
@@ -4,7 +4,6 @@ import org.gcube.application.framework.core.session.ASLSession;
 import org.gcube.common.core.utils.logging.GCUBEClientLog;
 import org.gcube.portal.databook.server.DBCassandraAstyanaxImpl;
 import org.gcube.portal.databook.server.DatabookStore;
-import org.gcube.portal.databook.shared.NotificationType;
 import org.gcube.portlets.user.homelibrary.home.workspace.WorkspaceFolder;
 import org.gcube.portlets.user.homelibrary.home.workspace.WorkspaceItem;
 /**