diff --git a/.fabmanager-version b/.fabmanager-version
index 30f69e8cc..a45141e5d 100644
--- a/.fabmanager-version
+++ b/.fabmanager-version
@@ -1 +1 @@
-2.5.9
+2.5.10-dev
diff --git a/README.md b/README.md
index 8bd19ad13..cbd6a1f8b 100644
--- a/README.md
+++ b/README.md
@@ -127,7 +127,7 @@ In you only intend to run fab-manager on your local machine for testing purposes
    ```bash
    rake db:create
    rake db:migrate
-   rake db:seed
+   ADMIN_EMAIL=youradminemail ADMIN_PASSWORD=youradminpassword rake db:seed
    ```
 
 9. Create the pids folder used by Sidekiq. If you want to use a different location, you can configure it in `config/sidekiq.yml`
@@ -279,7 +279,7 @@ If this parameter is not specified the maximum size allowed will be 2MB.
 
     ADMIN_EMAIL, ADMIN_PASSWORD
 
-Credentials for the first admin user created when seeding the project.
+Credentials for the first admin user created when seeding the project. (not present in application.yml because they are only used once when running the database seed with the command `rake db:seed`)
 
     Settings related to Open Projects
 
diff --git a/config/application.yml.default b/config/application.yml.default
index ab2e0b224..fd3b8e8f4 100644
--- a/config/application.yml.default
+++ b/config/application.yml.default
@@ -27,9 +27,6 @@ SMTP_PASSWORD:
 GA_ID: ''
 ##
 
-ADMIN_EMAIL: 'admin@fab-manager.com'
-ADMIN_PASSWORD: 'adminadmin'
-
 DISQUS_SHORTNAME:
 
 TWITTER_NAME: 'FablabGrenoble'
diff --git a/config/secrets.yml b/config/secrets.yml
index d7cfafe37..451419cad 100644
--- a/config/secrets.yml
+++ b/config/secrets.yml
@@ -42,8 +42,6 @@ development:
   facebook_app_id: <%= ENV["FACEBOOK_APP_ID"] %>
   elaticsearch_host: <%= ENV["ELASTICSEARCH_HOST"] %>
   max_image_size: <%= ENV["MAX_IMAGE_SIZE"] %>
-  admin_email: <%= ENV["ADMIN_EMAIL"] %>
-  admin_password: <%= ENV["ADMIN_PASSWORD"] %>
 
 test:
   secret_key_base: 83daf5e7b80d990f037407bab78dff9904aaf3c195a50f84fa8695a22287e707dfbd9524b403b1dcf116ae1d8c06844c3d7ed942564e5b46be6ae3ead93a9d30
@@ -77,8 +75,6 @@ test:
   facebook_app_id: <%= ENV["FACEBOOK_APP_ID"] %>
   elaticsearch_host: localhost
   max_image_size: <%= ENV["MAX_IMAGE_SIZE"] %>
-  admin_email: <%= ENV["ADMIN_EMAIL"] %>
-  admin_password: <%= ENV["ADMIN_PASSWORD"] %>
 
 staging:
   secret_key_base: <%= ENV["SECRET_KEY_BASE"] %>
@@ -117,8 +113,6 @@ staging:
   facebook_app_id: <%= ENV["FACEBOOK_APP_ID"] %>
   elaticsearch_host: <%= ENV["ELASTICSEARCH_HOST"] %>
   max_image_size: <%= ENV["MAX_IMAGE_SIZE"] %>
-  admin_email: <%= ENV["ADMIN_EMAIL"] %>
-  admin_password: <%= ENV["ADMIN_PASSWORD"] %>
 
 # Do not keep production secrets in the repository,
 # instead read values from the environment.
@@ -159,6 +153,4 @@ production:
   log_level: <%= ENV["LOG_LEVEL"] %>
   facebook_app_id: <%= ENV["FACEBOOK_APP_ID"] %>
   elaticsearch_host: <%= ENV["ELASTICSEARCH_HOST"] %>
-  max_image_size: <%= ENV["MAX_IMAGE_SIZE"] %>
-  admin_email: <%= ENV["ADMIN_EMAIL"] %>
-  admin_password: <%= ENV["ADMIN_PASSWORD"] %>
+  max_image_size: <%= ENV["MAX_IMAGE_SIZE"] %>
\ No newline at end of file
diff --git a/db/seeds.rb b/db/seeds.rb
index e88938c09..011bd0609 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -84,7 +84,7 @@ end
 
 # Create the default admin if none exists yet
 if Role.where(name: 'admin').joins(:users).count === 0
-    admin = User.new(username: 'admin', email: Rails.application.secrets.admin_email, password: Rails.application.secrets.admin_password, password_confirmation: Rails.application.secrets.admin_password, group_id: Group.first.id, profile_attributes: {first_name: 'admin', last_name: 'admin', gender: true, phone: '0123456789', birthday: Time.now})
+    admin = User.new(username: 'admin', email: ENV["ADMIN_EMAIL"], password: ENV["ADMIN_PASSWORD"], password_confirmation: Rails.application.secrets.admin_password, group_id: Group.first.id, profile_attributes: {first_name: 'admin', last_name: 'admin', gender: true, phone: '0123456789', birthday: Time.now})
     admin.add_role 'admin'
     admin.save!
 end
diff --git a/docker/README.md b/docker/README.md
index 0454ab43e..aa68af960 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -195,7 +195,7 @@ docker run --rm \
            --link=fabmanager-postgres:postgres \
            --link=fabmanager-redis:redis \
            --link=fabmanager-elastic:elasticsearch \
-           -e RAILS_ENV=production \
+           -e RAILS_ENV=production ADMIN_EMAIL=youradminemail ADMIN_PASSWORD=youradminpassword \
            --env-file /home/core/fabmanager/config/env \
            -v /home/core/fabmanager/plugins:/usr/src/app/plugins \
            sleede/fab-manager \