diff --git a/app/models/issue.rb b/app/models/issue.rb
index 2e7732089..ce1fa75d5 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -859,10 +859,14 @@ class Issue < ActiveRecord::Base
     dependencies = []
     dependencies += relations_from.map(&:issue_to)
     dependencies += children unless leaf?
-    dependencies << parent
     dependencies.compact!
     dependencies -= except
-    dependencies + dependencies.map {|issue| issue.all_dependent_issues(except)}.flatten
+    dependencies += dependencies.map {|issue| issue.all_dependent_issues(except)}.flatten
+    if parent
+      dependencies << parent
+      dependencies += parent.all_dependent_issues(except + parent.descendants)
+    end
+    dependencies
   end
 
   # Returns an array of issues that duplicate this one
diff --git a/test/unit/issue_relation_test.rb b/test/unit/issue_relation_test.rb
index f15a74c34..f0e74faf7 100644
--- a/test/unit/issue_relation_test.rb
+++ b/test/unit/issue_relation_test.rb
@@ -137,6 +137,19 @@ class IssueRelationTest < ActiveSupport::TestCase
     assert_include 'This relation would create a circular dependency', r.errors.full_messages
   end
 
+  def test_subtasks_should_allow_precedes_relation
+    parent = Issue.generate!
+    child1 = Issue.generate!(:parent_issue_id => parent.id)
+    child2 = Issue.generate!(:parent_issue_id => parent.id)
+
+    r = IssueRelation.new(
+          :issue_from => child1, :issue_to => child2,
+          :relation_type => IssueRelation::TYPE_PRECEDES
+        )
+    assert r.valid?
+    assert r.save
+  end
+
   def test_validates_circular_dependency_on_reverse_relations
     IssueRelation.delete_all
     assert IssueRelation.create!(