diff --git a/app/models/member_role.rb b/app/models/member_role.rb
index 286659fc3..9c28d413d 100644
--- a/app/models/member_role.rb
+++ b/app/models/member_role.rb
@@ -30,6 +30,10 @@ class MemberRole < ActiveRecord::Base
     errors.add :role_id, :invalid if role && !role.member?
   end
   
+  def inherited?
+    !inherited_from.nil?
+  end
+  
   private
   
   def remove_member_if_empty
diff --git a/app/models/project.rb b/app/models/project.rb
index 4accf5a7c..490c290be 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -23,6 +23,7 @@ class Project < ActiveRecord::Base
   # Specific overidden Activities
   has_many :time_entry_activities
   has_many :members, :include => [:user, :roles], :conditions => "#{User.table_name}.type='User' AND #{User.table_name}.status=#{User::STATUS_ACTIVE}"
+  has_many :memberships, :class_name => 'Member'
   has_many :member_principals, :class_name => 'Member', 
                                :include => :principal,
                                :conditions => "#{Principal.table_name}.type='Group' OR (#{Principal.table_name}.type='User' AND #{Principal.table_name}.status=#{User::STATUS_ACTIVE})"
@@ -583,10 +584,14 @@ class Project < ActiveRecord::Base
 
   # Copies members from +project+
   def copy_members(project)
-    project.members.each do |member|
+    project.memberships.each do |member|
       new_member = Member.new
       new_member.attributes = member.attributes.dup.except("id", "project_id", "created_on")
-      new_member.role_ids = member.role_ids.dup
+      # only copy non inherited roles
+      # inherited roles will be added when copying the group membership
+      role_ids = member.member_roles.reject(&:inherited?).collect(&:role_id)
+      next if role_ids.empty?
+      new_member.role_ids = role_ids
       new_member.project = self
       self.members << new_member
     end
diff --git a/test/fixtures/groups_users.yml b/test/fixtures/groups_users.yml
index 3702d6efc..a7ee94e86 100644
--- a/test/fixtures/groups_users.yml
+++ b/test/fixtures/groups_users.yml
@@ -2,4 +2,7 @@
 groups_users_001: 
   group_id: 10
   user_id: 8
+groups_users_002: 
+  group_id: 11
+  user_id: 8
   
\ No newline at end of file
diff --git a/test/fixtures/member_roles.yml b/test/fixtures/member_roles.yml
index e0fc6d064..7ddcb878a 100644
--- a/test/fixtures/member_roles.yml
+++ b/test/fixtures/member_roles.yml
@@ -37,3 +37,13 @@ member_roles_009:
   role_id: 2
   member_id: 7
   inherited_from: 7
+member_roles_010: 
+  id: 10
+  role_id: 2
+  member_id: 9
+  inherited_from:
+member_roles_011: 
+  id: 11
+  role_id: 2
+  member_id: 10
+  inherited_from: 10
diff --git a/test/fixtures/members.yml b/test/fixtures/members.yml
index 504d64f26..f4d39fb8a 100644
--- a/test/fixtures/members.yml
+++ b/test/fixtures/members.yml
@@ -48,3 +48,15 @@ members_008:
   id: 8
   user_id: 1
   mail_notification: true
+members_009: 
+  id: 9
+  created_on: 2006-07-19 19:35:33 +02:00
+  project_id: 2
+  user_id: 11
+  mail_notification: false
+members_010: 
+  id: 10
+  created_on: 2006-07-19 19:35:33 +02:00
+  project_id: 2
+  user_id: 8
+  mail_notification: false
diff --git a/test/unit/project_test.rb b/test/unit/project_test.rb
index f1dcb3418..c1fc84330 100644
--- a/test/unit/project_test.rb
+++ b/test/unit/project_test.rb
@@ -633,15 +633,15 @@ class ProjectTest < ActiveSupport::TestCase
       assert_not_equal source_relation_cross_project.id, copied_relation.id
     end
 
-    should "copy members" do
+    should "copy memberships" do
       assert @project.valid?
       assert @project.members.empty?
       assert @project.copy(@source_project)
 
-      assert_equal @source_project.members.size, @project.members.size
-      @project.members.each do |member|
-        assert member
-        assert_equal @project, member.project
+      assert_equal @source_project.memberships.size, @project.memberships.size
+      @project.memberships.each do |membership|
+        assert membership
+        assert_equal @project, membership.project
       end
     end