diff --git a/config.yml b/config.yml
index 228e49b8..64fe2956 100644
--- a/config.yml
+++ b/config.yml
@@ -44,7 +44,7 @@ plugins:
         -1: [ "https://cloud.denbi.de/portal/webapp/#/userinfo","http://169.254.169.254","https://login.elixir-czech.org/oidc/","https://spreg-legacy.aai.elixir-czech.org/spreg/auth/requests/new","https://spreg-legacy.aai.elixir-czech.org/spreg/auth/facilities/myServices","http://BIBIGRID_MASTER/ganglia" ]
         400: [ "http://169.254.169.254" ]
         500: [ "https://cloud.denbi.de/register", "https://signup.aai.lifescience-ri.eu/fed/registrar/?vo=elixir_test" ]
-        504: [ "https://denbi-cloud.bihealth.org","http://apt-cache.bi.denbi.de:9999","http://129.70.51.2:9999","https://cloud.denbi.dkfz-heidelberg.de","https://denbi-cloud.bioquant.uni-heidelberg.de " ]
+        504: [ "https://denbi-cloud.bihealth.org","http://apt-cache.bi.denbi.de:9999","http://129.70.51.2:9999","https://cloud.denbi.dkfz-heidelberg.de","https://denbi-cloud.bioquant.uni-heidelberg.de","https://denbi-cloud.bioquant.uni-heidelberg.de" ]
 markdown_extensions:
   - abbr
   - attr_list