diff --git a/common_landings.js b/common_landings.js
index 3f9d8b4f..6d0c65fe 100644
--- a/common_landings.js
+++ b/common_landings.js
@@ -45,7 +45,8 @@ function getCommonLandings() {
 
       return is_everywhere;
     })
-  });
+  })
+  .then(bugs => new Set(bugs));
 }
 
 onLoad