diff --git a/app.rb b/app.rb
index d1ab2c6..dc43868 100644
--- a/app.rb
+++ b/app.rb
@@ -69,9 +69,11 @@ class App < Roda
         rescue OpenURI::HTTPError
           response.status = 400
           return {message: "url not found"}.to_json
+        rescue SocketError => e
+          response.status = 400
+          return {message: "url does not resolve"}.to_json
         end
 
-
         if links.filter(:url => url).first.nil?
           code = SecureRandom.urlsafe_base64 4
           links.insert(url: url, code: code)