diff --git a/config/environments/development.rb b/config/environments/development.rb
index c3c5b2862..14f3377f7 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -19,13 +19,6 @@ Zammad::Application.configure do
   # Only use best-standards-support built into browsers
   config.action_dispatch.best_standards_support = :builtin
 
-  # Raise exception on mass assignment protection for Active Record models
-  config.active_record.mass_assignment_sanitizer = :strict
-
-  # Log the query plan for queries taking more than this (works
-  # with SQLite, MySQL, and PostgreSQL)
-  config.active_record.auto_explain_threshold_in_seconds = 0.5
-
   # Do not compress assets
   config.assets.compress = false
 
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 4ecfb86e5..4c418a760 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -61,10 +61,6 @@ Zammad::Application.configure do
   # Send deprecation notices to registered listeners
   config.active_support.deprecation = :notify
 
-  # Log the query plan for queries taking more than this (works
-  # with SQLite, MySQL, and PostgreSQL)
-  # config.active_record.auto_explain_threshold_in_seconds = 0.5
-
   # autoload on
   config.dependency_loading = true
 end
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 8e7ee2ef8..37bab79d2 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -27,9 +27,6 @@ Zammad::Application.configure do
   # ActionMailer::Base.deliveries array.
   config.action_mailer.delivery_method = :test
 
-  # Raise exception on mass assignment protection for Active Record models
-  config.active_record.mass_assignment_sanitizer = :strict
-
   # Print deprecation notices to the stderr
   config.active_support.deprecation = :stderr
 
diff --git a/config/environments/test_mysql.rb b/config/environments/test_mysql.rb
index 8e7ee2ef8..37bab79d2 100644
--- a/config/environments/test_mysql.rb
+++ b/config/environments/test_mysql.rb
@@ -27,9 +27,6 @@ Zammad::Application.configure do
   # ActionMailer::Base.deliveries array.
   config.action_mailer.delivery_method = :test
 
-  # Raise exception on mass assignment protection for Active Record models
-  config.active_record.mass_assignment_sanitizer = :strict
-
   # Print deprecation notices to the stderr
   config.active_support.deprecation = :stderr