gistfile1.txt

diff --git a/lib/mongoid/railtie.rb b/lib/mongoid/railtie.rb
index 1a2cf40..dbbd26f 100644
--- a/lib/mongoid/railtie.rb
+++ b/lib/mongoid/railtie.rb
@@ -59,7 +59,8 @@ module Rails #:nodoc:
       #
       initializer "setup database" do
         config_file = Rails.root.join("config", "mongoid.yml")
-        if config_file.file?
+        if config_file.file? &&
+          YAML.load(ERB.new(File.read(config_file)).result)[Rails.env].values.flatten.any?
           ::Mongoid.load!(config_file)
         end
       end