diff --git a/config/environments/development.rb b/config/environments/development.rb
index cbcbab02..cbfedf94 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -40,7 +40,7 @@
   config.file_watcher = ActiveSupport::EventedFileUpdateChecker
 
   # Prevent "Blocked host: hostname"
-  if !ENV["APP_HOSTNAME"].nil?
+  if !ENV["APP_HOSTNAME"].present?
     config.hosts << ENV["APP_HOSTNAME"]
   end