diff --git a/core/vendor/easyrdf/easyrdf/lib/EasyRdf/Namespace.php b/core/vendor/easyrdf/easyrdf/lib/EasyRdf/Namespace.php
index 61437b5..7bef3ac 100644
--- a/core/vendor/easyrdf/easyrdf/lib/EasyRdf/Namespace.php
+++ b/core/vendor/easyrdf/easyrdf/lib/EasyRdf/Namespace.php
@@ -88,7 +88,7 @@ class EasyRdf_Namespace
       'wdr' => 'http://www.w3.org/2007/05/powder#',
       'wdrs' => 'http://www.w3.org/2007/05/powder-s#',
       'wot' => 'http://xmlns.com/wot/0.1/',
-      'xhv' => 'http://www.w3.org/1999/xhtml/vocab#',
+      'xhv' => 'http://www.w3.org/1999/xhtml/vocab/#',
       'xml' => 'http://www.w3.org/XML/1998/namespace',
       'xsd' => 'http://www.w3.org/2001/XMLSchema#',
     );
diff --git a/core/vendor/easyrdf/easyrdf/lib/EasyRdf/Parser/Rdfa.php b/core/vendor/easyrdf/easyrdf/lib/EasyRdf/Parser/Rdfa.php
index 9e7902b..88ad981 100644
--- a/core/vendor/easyrdf/easyrdf/lib/EasyRdf/Parser/Rdfa.php
+++ b/core/vendor/easyrdf/easyrdf/lib/EasyRdf/Parser/Rdfa.php
@@ -198,12 +198,12 @@ protected function initialContext()
         );
 
         // Set the default prefix
-        $context['prefixes'][''] = 'http://www.w3.org/1999/xhtml/vocab#';
+        $context['prefixes'][''] = 'http://www.w3.org/1999/xhtml/vocab/#';
 
         // RDFa 1.1 default term mapping
         $context['terms']['describedby'] = 'http://www.w3.org/2007/05/powder-s#describedby';
-        $context['terms']['license'] = 'http://www.w3.org/1999/xhtml/vocab#license';
-        $context['terms']['role'] = 'http://www.w3.org/1999/xhtml/vocab#role';
+        $context['terms']['license'] = 'http://www.w3.org/1999/xhtml/vocab/#license';
+        $context['terms']['role'] = 'http://www.w3.org/1999/xhtml/vocab/#role';
 
         return $context;
     }