diff --git a/public/0.1/qualityAde.xsd b/public/0.1/qualityAde.xsd
index e942c72359148394f45e8c840af31656e4499e96..e05f86cd71caf6e3d42e4907f079655c250e23ff 100644
--- a/public/0.1/qualityAde.xsd
+++ b/public/0.1/qualityAde.xsd
@@ -401,7 +401,7 @@
 		<attribute name="numErrors" type="int" />
 	</complexType>
 
-	<element name="validation" type="qual:validationType" substitutionGroup="gml:_Feature" />
+	<element name="validation" type="qual:validationType" substitutionGroup="core:_GenericApplicationPropertyOfCityModel" />
 
 	<complexType name="validationType">
 		<annotation>
@@ -409,13 +409,13 @@
 				statistics of a validation process
 			</documentation>
 		</annotation>
-		<complexContent>
-			<extension base="gml:AbstractFeatureType">
+<!--  		<complexContent>
+			<extension base="gml:AbstractFeatureType"> -->
 				<sequence>
 					<element name="validationPlan" type="qual:validationPlanType" maxOccurs="1" />
 					<element name="statistics" type="qual:statisticsType" maxOccurs="1" />
 				</sequence>
-			</extension>
-		</complexContent>
+<!--			</extension>
+		</complexContent> -->
 	</complexType>
 </schema>
\ No newline at end of file