diff --git a/config/initializers/oink.rb b/config/initializers/oink.rb
index c8a17b0fb..038dd3c5c 100644
--- a/config/initializers/oink.rb
+++ b/config/initializers/oink.rb
@@ -1,3 +1,12 @@
 if Rails.env == 'development'
-  Rails.application.middleware.use(Oink::Middleware, :logger => Rails.logger)
-end
\ No newline at end of file
+  if defined?(Oink)
+    Rails.application.middleware.use(Oink::Middleware, :logger => Rails.logger)
+  else
+    $stderr.puts "WARNING:"
+    $stderr.puts "  You run in development but Oink isn't available in your gems."
+    $stderr.puts "  That most likely means you copied the bundle command from the installation guide"
+    $sterrr.puts "  and didn't removed development from the --without parameter while having"
+    $stderr.puts "  the intention to run under development mode. To fix this either switch to"
+    $stderr.puts "  production mode or do a rm .bundle/config and run bundle install --without heroku"
+  end
+end