diff --git a/app/models/topic_embed.rb b/app/models/topic_embed.rb
index c9dcc09bf..294f86ff2 100644
--- a/app/models/topic_embed.rb
+++ b/app/models/topic_embed.rb
@@ -80,7 +80,7 @@ class TopicEmbed < ActiveRecord::Base
     doc.search(tags.keys.join(',')).each do |node|
       url_param = tags[node.name]
       src = node[url_param]
-      unless (src.empty?)
+      unless (src.nil? || src.empty?)
         begin
           uri = URI.parse(src)
           unless uri.host