diff -u b/metatag.module b/metatag.module
--- b/metatag.module
+++ b/metatag.module
@@ -695,6 +695,7 @@
           // these?
           continue;
         }
+        $metatag_name = $metatag_name == 'canonical' ? 'canonical_url' : $key;
         // Keep the entire data structure.
         $metatag[$metatag_name] = $data;
       }