diff --git a/src/main/java/org/gcube/documentstore/persistence/PersistenceAccountingService.java b/src/main/java/org/gcube/documentstore/persistence/PersistenceAccountingService.java
index 562c91b..35dafc8 100644
--- a/src/main/java/org/gcube/documentstore/persistence/PersistenceAccountingService.java
+++ b/src/main/java/org/gcube/documentstore/persistence/PersistenceAccountingService.java
@@ -41,6 +41,7 @@ public class PersistenceAccountingService extends PersistenceBackend {
 	private static String containsFormat = "$entry/@EntryName eq '%1s'";
 
 	private static SimpleQuery queryForService() {
+		logger.trace("going to query GCoreEndpoint of {}", SERVICE_NAME);
 		return ICFactory.queryFor(GCoreEndpoint.class).addCondition(String.format(classFormat, SERVICE_CLASS))
 				.addCondition(String.format(nameFormat, SERVICE_NAME)).addCondition(String.format(statusFormat))
 				.addVariable("$entry", "$resource/Profile/AccessPoint/RunningInstanceInterfaces/Endpoint")