diff --git a/app/jobs/pretalx/import_job.rb b/app/jobs/pretalx/import_job.rb
index 1ddfbfffd84ec65d91a2282e8b2d4a323124c961..59f04c9a35e88932305a48a5aa92e691a954afd2 100644
--- a/app/jobs/pretalx/import_job.rb
+++ b/app/jobs/pretalx/import_job.rb
@@ -113,6 +113,7 @@ module Pretalx
     private
 
     def fetch_engelsystem(engelsystem_url, endpoint)
+      return nil unless engelsystem_url
       begin
         response = HTTParty.get(
           engelsystem_url + endpoint,