diff --git a/app/controllers/courses_crawler_controller.rb b/app/controllers/courses_crawler_controller.rb
index d1459bf..af21cb0 100644
--- a/app/controllers/courses_crawler_controller.rb
+++ b/app/controllers/courses_crawler_controller.rb
@@ -12,7 +12,7 @@ class CoursesCrawlerController < TissCrawlerController
 
   def show_detail
     params[:api] = '/api/course/'
-    regex = params[:detail_url].match(/courseNr=(?<number>\d{6})/)
+    regex = params[:detail_url].match(/courseNr=(?<number>\S{6})/)
     params[:number] = regex[:number]
     regex = params[:detail_url].match(/semester=(?<semester>\d{4}[SW])/)
     params[:semester] = regex[:semester]