diff --git a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/manage/GRSFNotificationService.java b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/manage/GRSFNotificationService.java
index a7c99b8..406cb09 100644
--- a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/manage/GRSFNotificationService.java
+++ b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/manage/GRSFNotificationService.java
@@ -4,7 +4,6 @@ import static org.gcube.resources.discovery.icclient.ICFactory.clientFor;
 import static org.gcube.resources.discovery.icclient.ICFactory.queryFor;
 
 import java.text.SimpleDateFormat;
-import java.util.Arrays;
 import java.util.Date;
 import java.util.Iterator;
 import java.util.List;
@@ -25,7 +24,6 @@ import org.slf4j.LoggerFactory;
 
 import eu.trentorise.opendata.jackan.internal.org.apache.http.HttpResponse;
 import eu.trentorise.opendata.jackan.internal.org.apache.http.client.methods.HttpPost;
-import eu.trentorise.opendata.jackan.internal.org.apache.http.entity.ContentType;
 import eu.trentorise.opendata.jackan.internal.org.apache.http.entity.StringEntity;
 import eu.trentorise.opendata.jackan.internal.org.apache.http.impl.client.CloseableHttpClient;
 import eu.trentorise.opendata.jackan.internal.org.apache.http.impl.client.HttpClientBuilder;