diff --git a/app/models/issue.rb b/app/models/issue.rb
index 633253db7..d83b2ab02 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -225,9 +225,9 @@ class Issue < ActiveRecord::Base
     dependencies
   end
   
-  # Returns an array of the duplicate issues
+  # Returns an array of issues that duplicate this one
   def duplicates
-    relations.select {|r| r.relation_type == IssueRelation::TYPE_DUPLICATES}.collect {|r| r.other_issue(self)}
+    relations_to.select {|r| r.relation_type == IssueRelation::TYPE_DUPLICATES}.collect {|r| r.issue_from}
   end
   
   # Returns the due date or the target due date if any
diff --git a/app/models/issue_relation.rb b/app/models/issue_relation.rb
index 07e940b85..49329e0bb 100644
--- a/app/models/issue_relation.rb
+++ b/app/models/issue_relation.rb
@@ -25,7 +25,7 @@ class IssueRelation < ActiveRecord::Base
   TYPE_PRECEDES     = "precedes"
   
   TYPES = { TYPE_RELATES =>     { :name => :label_relates_to, :sym_name => :label_relates_to, :order => 1 },
-            TYPE_DUPLICATES =>  { :name => :label_duplicates, :sym_name => :label_duplicates, :order => 2 },
+            TYPE_DUPLICATES =>  { :name => :label_duplicates, :sym_name => :label_duplicated_by, :order => 2 },
             TYPE_BLOCKS =>      { :name => :label_blocks, :sym_name => :label_blocked_by, :order => 3 },
             TYPE_PRECEDES =>    { :name => :label_precedes, :sym_name => :label_follows, :order => 4 },
           }.freeze
diff --git a/test/unit/issue_test.rb b/test/unit/issue_test.rb
index 36ba1fb45..999c4480d 100644
--- a/test/unit/issue_test.rb
+++ b/test/unit/issue_test.rb
@@ -42,7 +42,7 @@ class IssueTest < Test::Unit::TestCase
     assert_equal orig.custom_values.first.value, issue.custom_values.first.value
   end
   
-  def test_close_duplicates
+  def test_should_close_duplicates
     # Create 3 issues
     issue1 = Issue.new(:project_id => 1, :tracker_id => 1, :author_id => 1, :status_id => 1, :priority => Enumeration.get_values('IPRI').first, :subject => 'Duplicates test', :description => 'Duplicates test')
     assert issue1.save
@@ -52,12 +52,12 @@ class IssueTest < Test::Unit::TestCase
     assert issue3.save
     
     # 2 is a dupe of 1
-    IssueRelation.create(:issue_from => issue1, :issue_to => issue2, :relation_type => IssueRelation::TYPE_DUPLICATES)
+    IssueRelation.create(:issue_from => issue2, :issue_to => issue1, :relation_type => IssueRelation::TYPE_DUPLICATES)
     # And 3 is a dupe of 2
-    IssueRelation.create(:issue_from => issue2, :issue_to => issue3, :relation_type => IssueRelation::TYPE_DUPLICATES)
+    IssueRelation.create(:issue_from => issue3, :issue_to => issue2, :relation_type => IssueRelation::TYPE_DUPLICATES)
     # And 3 is a dupe of 1 (circular duplicates)
-    IssueRelation.create(:issue_from => issue1, :issue_to => issue3, :relation_type => IssueRelation::TYPE_DUPLICATES)
-    
+    IssueRelation.create(:issue_from => issue3, :issue_to => issue1, :relation_type => IssueRelation::TYPE_DUPLICATES)
+        
     assert issue1.reload.duplicates.include?(issue2)
     
     # Closing issue 1
@@ -69,6 +69,26 @@ class IssueTest < Test::Unit::TestCase
     assert issue3.reload.closed?    
   end
   
+  def test_should_not_close_duplicated_issue
+    # Create 3 issues
+    issue1 = Issue.new(:project_id => 1, :tracker_id => 1, :author_id => 1, :status_id => 1, :priority => Enumeration.get_values('IPRI').first, :subject => 'Duplicates test', :description => 'Duplicates test')
+    assert issue1.save
+    issue2 = issue1.clone
+    assert issue2.save
+    
+    # 2 is a dupe of 1
+    IssueRelation.create(:issue_from => issue2, :issue_to => issue1, :relation_type => IssueRelation::TYPE_DUPLICATES)
+    # 2 is a dup of 1 but 1 is not a duplicate of 2
+    assert !issue2.reload.duplicates.include?(issue1)
+    
+    # Closing issue 2
+    issue2.init_journal(User.find(:first), "Closing issue2")
+    issue2.status = IssueStatus.find :first, :conditions => {:is_closed => true}
+    assert issue2.save
+    # 1 should not be also closed
+    assert !issue1.reload.closed?
+  end
+  
   def test_move_to_another_project
     issue = Issue.find(1)
     assert issue.move_to(Project.find(2))