diff --git a/public/0.1/qualityAde.xsd b/public/0.1/qualityAde.xsd
index e05f86cd71caf6e3d42e4907f079655c250e23ff..a8282316e053cbeab05f70ee9c13a350e8b82479 100644
--- a/public/0.1/qualityAde.xsd
+++ b/public/0.1/qualityAde.xsd
@@ -338,7 +338,7 @@
 
 	<complexType name="globalParameterType">
 		<sequence>
-			<element name="parameter" type="qual:parameter" />
+			<element name="parameter" type="qual:parameter" maxOccurs="unbounded"/>
 		</sequence>
 	</complexType>