diff --git a/tests/ogc_conformance/data/kml/Document-clean.kml b/tests/ogc_conformance/data/kml/Document-clean.kml
index f0dd8182..65367198 100644
--- a/tests/ogc_conformance/data/kml/Document-clean.kml
+++ b/tests/ogc_conformance/data/kml/Document-clean.kml
@@ -3,6 +3,7 @@
   xmlns:atom="http://www.w3.org/2005/Atom"
   xmlns:xal="urn:oasis:names:tc:ciq:xsdschema:xAL:2.0"
   hint="A processing hint for a KML consumer">
+  <!-- Not implemented: NetworkLinkControl: Update, Delete, Create, Change -->
     <NetworkLinkControl>
       <minRefreshPeriod>43200</minRefreshPeriod>
       <maxSessionLength>-1</maxSessionLength>
@@ -79,11 +80,12 @@
 			<atom:link href="http://en.wikipedia.org/wiki/General_Motors_Place"
               rel="related" type="text/html" hreflang="en"
               title="Wikipedia entry" />
-      <xal:AddressDetails>
+      <!-- Not implemented: xal:AddressDetails -->
+      <!-- xal:AddressDetails>
         <xal:Address Type="Postal">
         800 Griffiths Way, Vancouver, BC, Canada V6B 6G1
         </xal:Address>
-      </xal:AddressDetails>
+      </xal:AddressDetails -->
       <phoneNumber>tel:+1-604-899-7400</phoneNumber>
       <snippet>Nicknamed The Garage and GM Place</snippet>
       <description>General Motors Place (), sponsored by General Motors Canada,
@@ -284,12 +286,13 @@
         </Placemark>
         <Placemark>
           <description>Navigation buoys in Vancouver harbour</description>
-          <ExtendedData xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
+          <!-- not yet implemented https://github.com/cleder/fastkml/issues/77 -->
+          <!-- ExtendedData xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
             <rdf:Description xmlns:dct="http://purl.org/dc/terms/">
               <dct:subject rdf:resource="https://www.dgiwg.org/FAD/servlet/View?i=100262"/>
               <dct:valid>2007</dct:valid>
             </rdf:Description>
-          </ExtendedData>
+          </ExtendedData -->
           <MultiGeometry id="geom-001">
             <Point id="b385.5"><coordinates>-123.3215766,49.2760338,0</coordinates></Point>
             <Point id="b386"><coordinates>-123.2643704,49.3301853,0</coordinates></Point>
diff --git a/tests/ogc_conformance/data/kml/Document-deprecated.kml b/tests/ogc_conformance/data/kml/Document-deprecated.kml
index e0a03678..0c02c852 100644
--- a/tests/ogc_conformance/data/kml/Document-deprecated.kml
+++ b/tests/ogc_conformance/data/kml/Document-deprecated.kml
@@ -51,11 +51,11 @@
       <atom:link href="http://en.wikipedia.org/wiki/General_Motors_Place"
               rel="related" type="text/html" hreflang="en"
               title="Wikipedia entry" />
-      <xal:AddressDetails>
+      <!--xal:AddressDetails>
         <xal:Address Type="Postal">
         800 Griffiths Way, Vancouver, BC, Canada V6B 6G1
         </xal:Address>
-      </xal:AddressDetails>
+      </xal:AddressDetails-->
       <phoneNumber>tel:+1-604-899-7400</phoneNumber>
       <Snippet maxLines="1">aka The Garage and GM Place</Snippet>
       <description>General Motors Place (), sponsored by General Motors Canada,