diff --git a/lib/active_admin_scoped_collection_actions/resource_extension.rb b/lib/active_admin_scoped_collection_actions/resource_extension.rb
index 77f305b..4958333 100644
--- a/lib/active_admin_scoped_collection_actions/resource_extension.rb
+++ b/lib/active_admin_scoped_collection_actions/resource_extension.rb
@@ -65,6 +65,7 @@ def scoped_collection_actions_sidebar_section
             b_data[:inputs] = options[:form].is_a?(Proc) ? options[:form].call : options[:form]
           end
           b_data[:confirm] = options.fetch(:confirm, I18n.t('active_admin_scoped_collection_actions.confirm_action_message'))
+          b_data[:confirm] = b_data[:confirm].call if b_data[:confirm].is_a?(Proc)
           b_options[:data] = b_data.to_json
           button b_title, b_options
         end
diff --git a/spec/posts_actions_spec.rb b/spec/posts_actions_spec.rb
index 706186c..a5ea305 100644
--- a/spec/posts_actions_spec.rb
+++ b/spec/posts_actions_spec.rb
@@ -41,4 +41,16 @@
     end
   end
 
+  context 'scoped collection action DELETE' do
+    before do
+      page.find('#collection_actions_sidebar_section button', text: 'Delete').click
+    end
+
+    context 'title' do
+      it 'has predefined confirmation title' do
+        expect(page).to have_css('.active_admin_dialog_mass_update_by_filter', text: 'Custom text for confirm delete all?')
+      end
+    end
+  end
+
 end
diff --git a/spec/support/admin.rb b/spec/support/admin.rb
index f74f694..c69debc 100644
--- a/spec/support/admin.rb
+++ b/spec/support/admin.rb
@@ -36,6 +36,9 @@ def add_post_resource(options = {}, &block)
                                    author_id: Author.all.map { |author| [author.name, author.id] }
                                }
                              }
+    scoped_collection_action :scoped_collection_destroy,
+                             title: 'Delete',
+                             confirm: -> { 'Custom text for confirm delete all?' }
   end
 
   Rails.application.reload_routes!