diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/api/exceptions/schema/SchemaAlreadyPresentException.java b/src/main/java/org/gcube/informationsystem/resourceregistry/api/exceptions/schema/SchemaAlreadyPresentException.java
index 96abad3..4be489b 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/api/exceptions/schema/SchemaAlreadyPresentException.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/api/exceptions/schema/SchemaAlreadyPresentException.java
@@ -1,9 +1,11 @@
 package org.gcube.informationsystem.resourceregistry.api.exceptions.schema;
 
+import org.gcube.informationsystem.resourceregistry.api.exceptions.AlreadyPresentException;
+
 /**
  * @author Luca Frosini (ISTI - CNR)
  */
-public class SchemaAlreadyPresentException extends SchemaException {
+public class SchemaAlreadyPresentException extends AlreadyPresentException {
 
 	/**
 	 * Generated Serial Version UID