diff --git a/VectoCore/VectoCore/Resources/XSD/VectoOutputMultistep.0.1.xsd b/VectoCore/VectoCore/Resources/XSD/VectoOutputMultistep.0.1.xsd
index a78eacac2e72faa29b8a70ba4f45aa6429f49bac..5a47927ec8085f8cba1bf2f3e06c75fdaf974529 100644
--- a/VectoCore/VectoCore/Resources/XSD/VectoOutputMultistep.0.1.xsd
+++ b/VectoCore/VectoCore/Resources/XSD/VectoOutputMultistep.0.1.xsd
@@ -187,7 +187,7 @@
 	</xs:complexType>
 	<xs:complexType name="AUX_HEV-P_PrimaryBusType">
 		<xs:complexContent>
-			<xs:extension base="v2.4:Abstract_AUX_HEV-P_PrimaryBusDeclarationType">
+			<xs:extension base="vif:Abstract_AUX_HEV-P_PrimaryBusDeclarationType">
 				<xs:sequence>
 					<xs:element name="Fan">
 						<xs:complexType>
@@ -272,7 +272,7 @@
 	</xs:complexType>
 	<xs:complexType name="AUX_HEV-S_PrimaryBusType">
 		<xs:complexContent>
-			<xs:extension base="v2.4:Abstract_AUX_HEV-S_PrimaryBusDeclarationType">
+			<xs:extension base="vif:Abstract_AUX_HEV-S_PrimaryBusDeclarationType">
 				<xs:sequence>
 					<xs:element name="Fan">
 						<xs:complexType>
@@ -356,7 +356,7 @@
 	</xs:complexType>
 	<xs:complexType name="AUX_IEPC_PrimaryBusType">
 		<xs:complexContent>
-			<xs:extension base="v2.4:Abstract_AUX_IEPC_PrimaryBusDeclarationType">
+			<xs:extension base="vif:Abstract_AUX_IEPC_PrimaryBusDeclarationType">
 				<xs:sequence>
 					<xs:element name="SteeringPump">
 						<xs:complexType>