diff --git a/app/helpers/issues_helper.rb b/app/helpers/issues_helper.rb
index 39b24fe04..04c40d98d 100644
--- a/app/helpers/issues_helper.rb
+++ b/app/helpers/issues_helper.rb
@@ -306,6 +306,17 @@ module IssuesHelper
       end
     when 'attachment'
       label = l(:label_attachment)
+    when 'relation'
+      if detail.value && !detail.old_value
+        rel_issue = Issue.find_by_id(detail.value)
+        value = rel_issue.nil? ? "#{l(:label_issue)} #{detail.value}" :
+                  (no_html ? rel_issue : link_to_issue(rel_issue))
+      elsif detail.old_value && !detail.value
+        rel_issue = Issue.find_by_id(detail.old_value)
+        old_value = rel_issue.nil? ? "#{l(:label_issue)} #{detail.old_value}" :
+                          (no_html ? rel_issue : link_to_issue(rel_issue))
+      end
+      label = l(detail.prop_key.to_sym)
     end
     call_hook(:helper_issues_show_detail_after_setting,
               {:detail => detail, :label => label, :value => value, :old_value => old_value })
@@ -353,7 +364,7 @@ module IssuesHelper
         else
           l(:text_journal_set_to, :label => label, :value => value).html_safe
         end
-      when 'attachment'
+      when 'attachment', 'relation'
         l(:text_journal_added, :label => label, :value => value).html_safe
       end
     else
diff --git a/app/models/issue_relation.rb b/app/models/issue_relation.rb
index 9e5015644..1de565011 100644
--- a/app/models/issue_relation.rb
+++ b/app/models/issue_relation.rb
@@ -72,6 +72,8 @@ class IssueRelation < ActiveRecord::Base
 
   attr_protected :issue_from_id, :issue_to_id
   before_save :handle_issue_order
+  after_create  :create_journal_after_create
+  after_destroy :create_journal_after_delete
 
   def visible?(user=User.current)
     (issue_from.nil? || issue_from.visible?(user)) && (issue_to.nil? || issue_to.visible?(user))
@@ -179,4 +181,30 @@ class IssueRelation < ActiveRecord::Base
       self.relation_type = TYPES[relation_type][:reverse]
     end
   end
+
+  def create_journal_after_create
+    journal = issue_from.init_journal(User.current)
+    journal.details << JournalDetail.new(:property => 'relation',
+                                         :prop_key => label_for(issue_from).to_s,
+                                         :value    => issue_to.id)
+    journal.save
+    journal = issue_to.init_journal(User.current)
+    journal.details << JournalDetail.new(:property => 'relation',
+                                         :prop_key => label_for(issue_to).to_s,
+                                         :value    => issue_from.id)
+    journal.save
+  end
+
+  def create_journal_after_delete
+    journal = issue_from.init_journal(User.current)
+    journal.details << JournalDetail.new(:property  => 'relation',
+                                         :prop_key  => label_for(issue_from).to_s,
+                                         :old_value => issue_to.id)
+    journal.save
+    journal = issue_to.init_journal(User.current)
+    journal.details << JournalDetail.new(:property  => 'relation',
+                                         :prop_key  => label_for(issue_to).to_s,
+                                         :old_value => issue_from.id)
+    journal.save
+  end
 end
diff --git a/test/unit/helpers/issues_helper_test.rb b/test/unit/helpers/issues_helper_test.rb
index 327ca0710..c775bc865 100644
--- a/test/unit/helpers/issues_helper_test.rb
+++ b/test/unit/helpers/issues_helper_test.rb
@@ -210,4 +210,36 @@ class IssuesHelperTest < ActionView::TestCase
                                :old_value => 'error281.txt', :value => nil)
     assert_match 'error281.txt', show_detail(detail, true)
   end
+
+  def test_show_detail_create_relation
+    detail = JournalDetail.new(:property => 'relation',
+                               :prop_key => 'label_precedes',
+                               :value    => 1)
+    assert_equal "Precedes Bug #1: Can't print recipes added", show_detail(detail, true)
+    assert_match %r{<strong>Precedes</strong> <i><a href="/issues/1" class=".+">Bug #1</a>: Can&#x27;t print recipes</i> added},
+                 show_detail(detail, false)
+    non_existed_issue_number = 9999
+    assert_nil  Issue.find_by_id(non_existed_issue_number)
+    detail = JournalDetail.new(:property => 'relation',
+                               :prop_key => 'label_precedes',
+                               :value    => non_existed_issue_number)
+    assert_equal "Precedes Issue #{non_existed_issue_number} added", show_detail(detail, true)
+    assert_equal "<strong>Precedes</strong> <i>Issue #{non_existed_issue_number}</i> added", show_detail(detail, false)
+  end
+
+  def test_show_detail_delete_relation
+    detail = JournalDetail.new(:property  => 'relation',
+                               :prop_key  => 'label_precedes',
+                               :old_value => 1)
+    assert_equal "Precedes deleted (Bug #1: Can't print recipes)", show_detail(detail, true)
+    assert_match %r{<strong>Precedes</strong> deleted \(<del><i><a href="/issues/1" class=".+">Bug #1</a>: Can&#x27;t print recipes</i></del>\)},
+                 show_detail(detail, false)
+    non_existed_issue_number = 9999
+    assert_nil  Issue.find_by_id(non_existed_issue_number)
+    detail = JournalDetail.new(:property  => 'relation',
+                               :prop_key  => 'label_precedes',
+                               :old_value => non_existed_issue_number)
+    assert_equal "Precedes deleted (Issue 9999)", show_detail(detail, true)
+    assert_equal "<strong>Precedes</strong> deleted (<del><i>Issue 9999</i></del>)", show_detail(detail, false)
+  end
 end
diff --git a/test/unit/issue_relation_test.rb b/test/unit/issue_relation_test.rb
index f0e74faf7..1b76056ee 100644
--- a/test/unit/issue_relation_test.rb
+++ b/test/unit/issue_relation_test.rb
@@ -167,4 +167,49 @@ class IssueRelationTest < ActiveSupport::TestCase
     assert !r.save
     assert_not_nil r.errors[:base]
   end
+
+  def test_create_should_make_journal_entry
+    from = Issue.find(1)
+    to   = Issue.find(2)
+    from_journals = from.journals.size
+    to_journals   = to.journals.size
+    relation = IssueRelation.new(:issue_from => from, :issue_to => to,
+                                 :relation_type => IssueRelation::TYPE_PRECEDES)
+    assert relation.save
+    from.reload
+    to.reload
+    relation.reload
+    assert_equal from.journals.size, (from_journals + 1)
+    assert_equal to.journals.size, (to_journals + 1)
+    assert_equal 'relation', from.journals.last.details.last.property
+    assert_equal 'label_precedes', from.journals.last.details.last.prop_key
+    assert_equal '2', from.journals.last.details.last.value
+    assert_nil   from.journals.last.details.last.old_value
+    assert_equal 'relation', to.journals.last.details.last.property
+    assert_equal 'label_follows', to.journals.last.details.last.prop_key
+    assert_equal '1', to.journals.last.details.last.value
+    assert_nil   to.journals.last.details.last.old_value
+  end
+
+  def test_delete_should_make_journal_entry
+    relation = IssueRelation.find(1)
+    id = relation.id
+    from = relation.issue_from
+    to   = relation.issue_to
+    from_journals = from.journals.size
+    to_journals   = to.journals.size
+    assert relation.destroy
+    from.reload
+    to.reload
+    assert_equal from.journals.size, (from_journals + 1)
+    assert_equal to.journals.size, (to_journals + 1)
+    assert_equal 'relation', from.journals.last.details.last.property
+    assert_equal 'label_blocks', from.journals.last.details.last.prop_key
+    assert_equal '9', from.journals.last.details.last.old_value
+    assert_nil   from.journals.last.details.last.value
+    assert_equal 'relation', to.journals.last.details.last.property
+    assert_equal 'label_blocked_by', to.journals.last.details.last.prop_key
+    assert_equal '10', to.journals.last.details.last.old_value
+    assert_nil   to.journals.last.details.last.value
+  end
 end