diff --git a/src/main/java/org/gcube/informationsystem/types/reference/relations/RelationType.java b/src/main/java/org/gcube/informationsystem/types/reference/relations/RelationType.java
index e34327a..b5ea814 100644
--- a/src/main/java/org/gcube/informationsystem/types/reference/relations/RelationType.java
+++ b/src/main/java/org/gcube/informationsystem/types/reference/relations/RelationType.java
@@ -56,10 +56,4 @@ public interface RelationType<S extends EntityType, T extends EntityType>
 	
 	/* Type is just a Java useful class. The type is not created in the IS. Hence the fields must be redefined */
 	
-	/*@JsonGetter(value=SOURCE_PROPERTY)
-	public String getSourceType();
-	
-	@JsonGetter(value=TARGET_PROPERTY)
-	public String getTargetType();*/
-	
 }