diff --git a/src/test/java/org/gcube/informationsystem/resourceregistry/types/SchemaManagementImplTest.java b/src/test/java/org/gcube/informationsystem/resourceregistry/types/SchemaManagementImplTest.java
index 5cea6d9..c1fb987 100644
--- a/src/test/java/org/gcube/informationsystem/resourceregistry/types/SchemaManagementImplTest.java
+++ b/src/test/java/org/gcube/informationsystem/resourceregistry/types/SchemaManagementImplTest.java
@@ -8,7 +8,6 @@ import java.util.List;
 import org.gcube.informationsystem.base.reference.AccessType;
 import org.gcube.informationsystem.base.reference.ISManageable;
 import org.gcube.informationsystem.base.reference.properties.BaseProperty;
-import org.gcube.informationsystem.base.reference.relations.BaseRelation;
 import org.gcube.informationsystem.context.reference.entities.Context;
 import org.gcube.informationsystem.model.reference.entities.Entity;
 import org.gcube.informationsystem.model.reference.entities.Facet;
@@ -21,8 +20,6 @@ import org.gcube.informationsystem.model.reference.relations.IsRelatedTo;
 import org.gcube.informationsystem.model.reference.relations.Relation;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.schema.SchemaAlreadyPresentException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.schema.SchemaException;
-import org.gcube.informationsystem.resourceregistry.types.SchemaManagement;
-import org.gcube.informationsystem.resourceregistry.types.SchemaManagementImpl;
 import org.gcube.informationsystem.types.TypeBinder;
 import org.gcube.informationsystem.types.impl.entities.EntityTypeDefinitionImpl;
 import org.gcube.informationsystem.types.impl.properties.PropertyTypeDefinitionImpl;
@@ -261,8 +258,8 @@ public class SchemaManagementImplTest {
 	
 	@Test
 	public void createRelationTypeDefinitionType() throws Exception {
-		@SuppressWarnings("unchecked")
-		RelationTypeDefinition<EntityTypeDefinition, EntityTypeDefinition> relationTypeDefinition = new RelationTypeDefinitionImpl<EntityTypeDefinition, EntityTypeDefinition>((Class<? extends BaseRelation<?,?>>) RelationTypeDefinition.class);
+		@SuppressWarnings({"unchecked", "rawtypes"})
+		RelationTypeDefinition<?, ?> relationTypeDefinition = new RelationTypeDefinitionImpl(RelationTypeDefinition.class);
 		
 		SchemaManagement schemaManagement = new SchemaManagementImpl();
 		((SchemaManagementImpl) schemaManagement).setTypeName(RelationTypeDefinition.NAME);