diff --git a/README.md b/README.md
index ef2aaf2313..4c32438568 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,31 @@ This plugin contains migrations. To migrate the database, run:
 `rake db:migrate`
 
 
+Tests
+-----
+
+Assuming you have to following directory structure:
+
+```
+.
+├── openproject
+├── openproject-documents
+```
+
+Replace the openproject-document ``gemfile.plugins`` entry with the following:
+
+```
+gem "openproject-documents", path: "../openproject-documents"
+```
+
+You run the specs with the following commands:
+
+```
+cd openproject
+rake db:test:load # this needs to be done only once
+rspec ../openproject-documents
+```
+
 Deinstallation
 --------------
 
diff --git a/app/models/document.rb b/app/models/document.rb
index fd3a4d1d93..c73dca1bf4 100644
--- a/app/models/document.rb
+++ b/app/models/document.rb
@@ -39,6 +39,7 @@ class Document < ActiveRecord::Base
   acts_as_journalized
   acts_as_event title: Proc.new { |o| "#{Document.model_name.human}: #{o.title}" },
                 url: Proc.new { |o| { controller: '/documents', action: 'show', id: o.id } },
+                datetime: :created_on,
                 author: ( Proc.new do |o|
                             o.attachments.find(:first, order: "#{Attachment.table_name}.created_on ASC").try(:author)
                           end)
diff --git a/doc/CHANGELOG.md b/doc/CHANGELOG.md
index 294e1752bc..6f658cf3d8 100644
--- a/doc/CHANGELOG.md
+++ b/doc/CHANGELOG.md
@@ -32,6 +32,8 @@ See doc/COPYRIGHT.rdoc for more details.
 
 # Changelog
 
+* Fix: Acts as event datetime
+
 ## 1.0.1
 
 * `#5361` Add missing journal data migration
diff --git a/spec/models/document_spec.rb b/spec/models/document_spec.rb
index a082006310..23dd839d35 100644
--- a/spec/models/document_spec.rb
+++ b/spec/models/document_spec.rb
@@ -101,4 +101,11 @@ describe Document do
     end
   end
 
+  describe "acts as event" do
+    let(:now) { Time.now }
+    let(:document) { FactoryGirl.build(:document,
+                                       created_on: now) }
+
+    it { expect(document.event_datetime).to eq(now) }
+  end
 end