diff --git a/config/deploy/development.rb b/config/deploy/development.rb
index fedaa31b5..40e5d6814 100644
--- a/config/deploy/development.rb
+++ b/config/deploy/development.rb
@@ -1 +1,2 @@
+set :rails_env, "development"
 server "localhost", :roles => %w(web app db), :primary => true
diff --git a/config/deploy/production.rb b/config/deploy/production.rb
index 13355d807..8f7f253ab 100644
--- a/config/deploy/production.rb
+++ b/config/deploy/production.rb
@@ -1,3 +1,4 @@
 set :user, "albert"
+set :rails_env, "production"
 server "sonohara.donmai.us", :roles => %w(web app db), :primary => true, :user => "albert"
 server "hijiribe.donmai.us", :roles => %w(web app), :user => "albert"
diff --git a/config/deploy/staging.rb b/config/deploy/staging.rb
index 8056f1bdd..95d6841a2 100644
--- a/config/deploy/staging.rb
+++ b/config/deploy/staging.rb
@@ -1 +1,2 @@
+set :rails_env, "staging"
 server "testbooru.donmai.us", :roles => %w(web app db), :primary => true, :user => "danbooru"