diff --git a/config/initializers/hosts_blacklist.rb b/config/initializers/hosts_blacklist.rb
index 4fcffb6c9..c8ac3bcea 100644
--- a/config/initializers/hosts_blacklist.rb
+++ b/config/initializers/hosts_blacklist.rb
@@ -11,10 +11,12 @@
 
 # Store in the blacklist the host for each line, which is what we're interested in
 blacklist = []
-list['hosts'].each do |url|
-  blacklisted_url = UrlNormalizer.normalize_feed_url(url).downcase
-  blacklisted_host = Addressable::URI.parse(blacklisted_url).host
-  blacklist << blacklisted_host
+if list['hosts'].present?
+  list['hosts'].each do |url|
+    blacklisted_url = UrlNormalizer.normalize_feed_url(url).downcase
+    blacklisted_host = Addressable::URI.parse(blacklisted_url).host
+    blacklist << blacklisted_host
+  end
 end
 
 Rails.application.config.hosts_blacklist = blacklist