diff --git a/code/model/SiteTree.php b/code/model/SiteTree.php
index 36444e58..aa804961 100755
--- a/code/model/SiteTree.php
+++ b/code/model/SiteTree.php
@@ -699,11 +699,14 @@ class SiteTree extends DataObject implements PermissionProvider,i18nEntityProvid
 		$children = $this->AllChildren();
 
 		if($children) {
+			$sort = 0;
 			foreach($children as $child) {
 				$childClone = method_exists($child, 'duplicateWithChildren')
 					? $child->duplicateWithChildren()
 					: $child->duplicate();
 				$childClone->ParentID = $clone->ID;
+				//retain sort order by manually setting sort values
+				$childClone->Sort = ++$sort;
 				$childClone->write();
 			}
 		}
diff --git a/tests/model/SiteTreeTest.php b/tests/model/SiteTreeTest.php
index fd65ecae..93ad7157 100644
--- a/tests/model/SiteTreeTest.php
+++ b/tests/model/SiteTreeTest.php
@@ -342,6 +342,39 @@ class SiteTreeTest extends SapphireTest {
 		$this->assertStringEndsWith('changed-on-live/my-staff/?stage=Live', $child->getAbsoluteLiveLink());
 	}
 
+	public function testDuplicateChildrenRetainSort() {
+		$parent = new Page();
+		$parent->Title = 'Parent';
+		$parent->write();
+
+		$child1 = new Page();
+		$child1->ParentID = $parent->ID;
+		$child1->Title = 'Child 1';
+		$child1->Sort = 2;
+		$child1->write();
+
+		$child2 = new Page();
+		$child2->ParentID = $parent->ID;
+		$child2->Title = 'Child 2';
+		$child2->Sort = 1;
+		$child2->write();
+
+		$duplicateParent = $parent->duplicateWithChildren();
+		$duplicateChildren = $duplicateParent->AllChildren()->toArray();
+		$this->assertCount(2, $duplicateChildren);
+
+		$duplicateChild2 = array_shift($duplicateChildren);
+		$duplicateChild1 = array_shift($duplicateChildren);
+
+
+		$this->assertEquals('Child 1', $duplicateChild1->Title);
+		$this->assertEquals('Child 2', $duplicateChild2->Title);
+
+		// assertGreaterThan works by having the LOWER value first
+		$this->assertGreaterThan($duplicateChild2->Sort, $duplicateChild1->Sort);
+
+	}
+
 	public function testDeleteFromStageOperatesRecursively() {
 		Config::inst()->update('SiteTree', 'enforce_strict_hierarchy', false);
 		$pageAbout = $this->objFromFixture('Page', 'about');