diff --git a/lib/bullet.rb b/lib/bullet.rb
index 39afbc1a..ab932d70 100644
--- a/lib/bullet.rb
+++ b/lib/bullet.rb
@@ -38,6 +38,7 @@ class << self
                 :stacktrace_includes,
                 :stacktrace_excludes,
                 :skip_html_injection
+    attr_reader :whitelist
     attr_accessor :add_footer, :orm_patches_applied
 
     available_notifiers = UniformNotifier::AVAILABLE_NOTIFIERS.map { |notifier| "#{notifier}=" }
@@ -97,27 +98,27 @@ def stacktrace_excludes
 
     def add_whitelist(options)
       reset_whitelist
-      Thread.current[:whitelist][options[:type]][options[:class_name]] ||= []
-      Thread.current[:whitelist][options[:type]][options[:class_name]] << options[:association].to_sym
+      @whitelist[options[:type]][options[:class_name]] ||= []
+      @whitelist[options[:type]][options[:class_name]] << options[:association].to_sym
     end
 
     def delete_whitelist(options)
       reset_whitelist
-      Thread.current[:whitelist][options[:type]][options[:class_name]] ||= []
-      Thread.current[:whitelist][options[:type]][options[:class_name]].delete(options[:association].to_sym)
-      Thread.current[:whitelist][options[:type]].delete_if { |_key, val| val.empty? }
+      @whitelist[options[:type]][options[:class_name]] ||= []
+      @whitelist[options[:type]][options[:class_name]].delete(options[:association].to_sym)
+      @whitelist[options[:type]].delete_if { |_key, val| val.empty? }
     end
 
     def get_whitelist_associations(type, class_name)
-      Array(Thread.current[:whitelist][type][class_name])
+      Array(@whitelist[type][class_name])
     end
 
     def reset_whitelist
-      Thread.current[:whitelist] ||= { n_plus_one_query: {}, unused_eager_loading: {}, counter_cache: {} }
+      @whitelist ||= { n_plus_one_query: {}, unused_eager_loading: {}, counter_cache: {} }
     end
 
     def clear_whitelist
-      Thread.current[:whitelist] = nil
+      @whitelist = nil
     end
 
     def bullet_logger=(active)
diff --git a/spec/bullet_spec.rb b/spec/bullet_spec.rb
index ff252006..475ed4f8 100644
--- a/spec/bullet_spec.rb
+++ b/spec/bullet_spec.rb
@@ -88,7 +88,7 @@
       it 'is deleted from the whitelist successfully' do
         Bullet.add_whitelist(type: :n_plus_one_query, class_name: 'Klass', association: :department)
         Bullet.delete_whitelist(type: :n_plus_one_query, class_name: 'Klass', association: :department)
-        expect(Thread.current[:whitelist][:n_plus_one_query]).to eq({})
+        expect(Bullet.whitelist[:n_plus_one_query]).to eq({})
       end
     end