diff --git a/lib/graphiti/util/link.rb b/lib/graphiti/util/link.rb
index 49f8332a..9390a2eb 100644
--- a/lib/graphiti/util/link.rb
+++ b/lib/graphiti/util/link.rb
@@ -48,6 +48,7 @@ def raw_url
 
       def on_demand_links(url)
         return url unless Graphiti.config.links_on_demand
+        return unless url
 
         url << if url.include?("?")
           "&links=true"