diff --git a/app/lib/tag_manager.rb b/app/lib/tag_manager.rb
index 7a32a51c1..2e929d6e3 100644
--- a/app/lib/tag_manager.rb
+++ b/app/lib/tag_manager.rb
@@ -28,7 +28,7 @@ class TagManager
     domain = uri.host + (uri.port ? ":#{uri.port}" : '')
 
     TagManager.instance.web_domain?(domain)
-  rescue Addressable::URI::InvalidURIError
+  rescue Addressable::URI::InvalidURIError, IDN::Idna::IdnaError
     false
   end
 end