diff --git a/app/models/issue.rb b/app/models/issue.rb
index 383b41b..106b7e7 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -1364,7 +1364,6 @@ class Issue < ActiveRecord::Base
                 "* (CASE WHEN is_closed = #{connection.quoted_true} THEN 100 ELSE COALESCE(done_ratio, 0) END)").to_f
           progress = done / (average * leaves_count)
           p.done_ratio = progress.round
-          p.done_ratio = 100 if p.done_ratio > 100
         end
       end
 
diff --git a/test/unit/issue_nested_set_test.rb b/test/unit/issue_nested_set_test.rb
index 3649e97..f3bfddb 100644
--- a/test/unit/issue_nested_set_test.rb
+++ b/test/unit/issue_nested_set_test.rb
@@ -356,6 +356,19 @@ class IssueNestedSetTest < ActiveSupport::TestCase
     assert_equal 12, parent.reload.estimated_hours
   end
 
+  def test_done_ratio_of_parent_with_a_child_without_estimated_time_should_not_exceed_100
+    parent = Issue.generate!
+    Issue.generate!(:estimated_hours => 40, :parent_issue_id => parent.id)
+    Issue.generate!(:estimated_hours => 40, :parent_issue_id => parent.id)
+    Issue.generate!(:estimated_hours => 20, :parent_issue_id => parent.id)
+    Issue.generate!(:parent_issue_id => parent.id)
+    parent.reload.children.each do |child|
+      child.update_attribute :status_id, 5
+      puts parent.reload.done_ratio
+    end
+    assert_equal 100, parent.reload.done_ratio
+  end
+
   def test_move_parent_updates_old_parent_attributes
     first_parent = Issue.generate!
     second_parent = Issue.generate!