diff --git a/src/main/resources/documentation/ontology/classes.rqg b/src/main/resources/documentation/ontology/classes.rqg
index a6741c6239b615465c3f70b56db4412a27c82bfc..609590933a978223defcbfd58f72f5e5705b3656 100644
--- a/src/main/resources/documentation/ontology/classes.rqg
+++ b/src/main/resources/documentation/ontology/classes.rqg
@@ -13,7 +13,7 @@ PREFIX iter: <http://w3id.org/sparql-generate/iter/>
 
 BASE <https://saref.etsi.org/documentation/>
 
-TEMPLATE <classes.rqg>( ?onto ) { 
+TEMPLATE <classes.rqg>( ) { 
 
   """\n<div id='classes'>
   <h2>{fun:property(<en.properties>, 'classes')}</h2>
diff --git a/src/main/resources/documentation/ontology/main.rqg b/src/main/resources/documentation/ontology/main.rqg
index eee1f22c18393ddd7926b9ddf903e34321fec49d..b1fa7e3132bedde5e172f6249a958f04e7c400bf 100644
--- a/src/main/resources/documentation/ontology/main.rqg
+++ b/src/main/resources/documentation/ontology/main.rqg
@@ -168,22 +168,22 @@ TEMPLATE {
 
     "\n\n\n" TEMPLATE <ontology/namespaces.rqg>() .
 
-    "\n\n\n" TEMPLATE <ontology/classes.rqg>( ?onto ) 
+    "\n\n\n" TEMPLATE <ontology/classes.rqg>( ) 
     WHERE {
       {?c a owl:Class} UNION {?c a rdfs:Class}
     } LIMIT 1 . 
     
-    "\n\n\n" TEMPLATE <ontology/objectProperties.rqg>( ?onto ) 
+    "\n\n\n" TEMPLATE <ontology/objectProperties.rqg>( ) 
     WHERE {
       ?op a owl:ObjectProperty
     } LIMIT 1 . 
 
-    "\n\n\n" TEMPLATE <ontology/dataProperties.rqg>( ?onto )
+    "\n\n\n" TEMPLATE <ontology/dataProperties.rqg>( )
     WHERE {
       ?op a owl:DatatypeProperty
     } LIMIT 1 . 
 
-    "\n\n\n" TEMPLATE <ontology/namedIndividuals.rqg>( ?onto ) . 
+    "\n\n\n" TEMPLATE <ontology/namedIndividuals.rqg>( ) . 
 
     "\n\n\n" TEMPLATE <ontology/examples.rqg>( ) .