diff --git a/xsd/netex_part_1/part1_tacticalPlanning/netex_servicePattern_support.xsd b/xsd/netex_part_1/part1_tacticalPlanning/netex_servicePattern_support.xsd
index 65b4fa43e..59b0c0ef8 100644
--- a/xsd/netex_part_1/part1_tacticalPlanning/netex_servicePattern_support.xsd
+++ b/xsd/netex_part_1/part1_tacticalPlanning/netex_servicePattern_support.xsd
@@ -94,6 +94,17 @@ Rail transport, Roads and Road transport
 						<xsd:documentation>Identifier of SCHEDULED STOP POINT.</xsd:documentation>
 					</xsd:annotation>
 				</xsd:attribute>
+				<xsd:attribute name="nameOfRefClass" use="optional" default="ScheduledStopPoint">
+					<xsd:annotation>
+						<xsd:documentation>The natural class expected in the reference and alternative options, automatically updated.</xsd:documentation>
+					</xsd:annotation>
+					<xsd:simpleType>
+						<xsd:restriction base="NameOfClass">
+							<xsd:enumeration value="ScheduledStopPoint"/>
+							<xsd:enumeration value="TimingPoint"/>
+						</xsd:restriction>
+					</xsd:simpleType>
+				</xsd:attribute>
 			</xsd:restriction>
 		</xsd:simpleContent>
 	</xsd:complexType>