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-rw-r--r--modules/rdf/rdf.module1
1 files changed, 1 insertions, 0 deletions
diff --git a/modules/rdf/rdf.module b/modules/rdf/rdf.module
index 6c341b8d7..e1b41c1ad 100644
--- a/modules/rdf/rdf.module
+++ b/modules/rdf/rdf.module
@@ -80,6 +80,7 @@ function rdf_rdf_namespaces() {
'content' => 'http://purl.org/rss/1.0/modules/content/',
'dc' => 'http://purl.org/dc/terms/',
'foaf' => 'http://xmlns.com/foaf/0.1/',
+ 'og' => 'http://ogp.me/ns#',
'owl' => 'http://www.w3.org/2002/07/owl#',
'rdf' => 'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
'rdfs' => 'http://www.w3.org/2000/01/rdf-schema#',