diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/queries/templates/QueryTemplateManagement.java b/src/main/java/org/gcube/informationsystem/resourceregistry/queries/templates/QueryTemplateManagement.java
index 725ef74..b85fe02 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/queries/templates/QueryTemplateManagement.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/queries/templates/QueryTemplateManagement.java
@@ -283,7 +283,7 @@ public class QueryTemplateManagement extends EntityElementManagement<QueryTempla
 
 	/**
 	 * Run the query after having replaced query parameter with the provided values
-	 * @return
+	 * @return the result as JSON string
 	 * @throws Exception 
 	 */
 	public String run() throws ResourceRegistryException {
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/rest/Access.java b/src/main/java/org/gcube/informationsystem/resourceregistry/rest/Access.java
index 8363793..7c969e6 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/rest/Access.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/rest/Access.java
@@ -291,7 +291,7 @@ public class Access extends BaseRest {
 	 * }
 	 * 
 	 * @param jsonQuery
-	 * @return
+	 * @return the result as JSON String
 	 * @throws InvalidQueryException
 	 * @throws ResourceRegistryException
 	 */