diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index fcd8a77c7..35a7657b1 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -34,4 +34,4 @@ Please test with the latest Ruby 1.8.x and 1.9.x versions using RVM if possible.
 ## Running active record tests
 
 Make sure you have a local PostgreSQL database named `carrierwave_test` with the username
-`root` and empty password.
+`postgres`
diff --git a/spec/support/activerecord.rb b/spec/support/activerecord.rb
index 9c34ee89c..af34d4eaf 100644
--- a/spec/support/activerecord.rb
+++ b/spec/support/activerecord.rb
@@ -10,7 +10,8 @@
 dbconfig = {
   :adapter  => 'postgresql',
   :database => 'carrierwave_test',
-  :encoding => 'utf8'
+  :encoding => 'utf8',
+  :username => 'postgres'
 }
 
 database = dbconfig.delete(:database)