diff --git a/xml/sstc-saml-idp-discovery.xsd b/xml/sstc-saml-idp-discovery.xsd
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+++ b/xml/sstc-saml-idp-discovery.xsd
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+<schema
+    targetNamespace="urn:oasis:names:tc:SAML:profiles:SSO:idp-discovery-protocol"
+    xmlns:idpdisc="urn:oasis:names:tc:SAML:profiles:SSO:idp-discovery-protocol"
+    xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata"
+    xmlns="http://www.w3.org/2001/XMLSchema"
+    elementFormDefault="unqualified"
+    attributeFormDefault="unqualified"
+    blockDefault="substitution"
+    version="2.0">
+    <annotation>
+        <documentation>
+            Document identifier: sstc-saml-idp-discovery
+            Location: http://www.oasis-open.org/committees/documents.php?wg_abbrev=security
+            Revision history:
+            V1.0 (January 2007):
+              Initial version.
+        </documentation>
+    </annotation>
+    <import namespace="urn:oasis:names:tc:SAML:2.0:metadata"
+        schemaLocation="saml-schema-metadata-2.0.xsd"/>
+    <element name="DiscoveryResponse" type="md:IndexedEndpointType"/>
+</schema>