diff --git a/code/model/SiteTree.php b/code/model/SiteTree.php
index de0c3f69..8319b5cf 100755
--- a/code/model/SiteTree.php
+++ b/code/model/SiteTree.php
@@ -1574,7 +1574,7 @@ class SiteTree extends DataObject implements PermissionProvider,i18nEntityProvid
 		parent::onBeforeDelete();
 
 		// If deleting this page, delete all its children.
-		if(SiteTree::config()->enforce_strict_hierarchy && $children = $this->AllChildren()) {
+		if($this->isInDB() && SiteTree::config()->enforce_strict_hierarchy && $children = $this->AllChildren()) {
 			foreach($children as $child) {
 				$child->delete();
 			}
diff --git a/tests/model/SiteTreeTest.php b/tests/model/SiteTreeTest.php
index 3ded8572..8f4ae262 100644
--- a/tests/model/SiteTreeTest.php
+++ b/tests/model/SiteTreeTest.php
@@ -276,7 +276,25 @@ class SiteTreeTest extends SapphireTest {
 
 	}
 
-	public function testGetByLink() {
+    public function testNoCascadingDeleteWithoutID() {
+        Config::inst()->update('SiteTree', 'enforce_strict_hierarchy', true);
+        $count = SiteTree::get()->count();
+        $this->assertNotEmpty($count);
+        $obj = new SiteTree();
+        $this->assertFalse($obj->exists());
+        $fail = true;
+        try {
+            $obj->delete();
+        } catch (LogicException $e) {
+            $fail = false;
+        }
+        if ($fail) {
+            $this->fail('Failed to throw delete exception');
+        }
+        $this->assertCount($count, SiteTree::get());
+    }
+
+    public function testGetByLink() {
 		$home     = $this->objFromFixture('Page', 'home');
 		$about    = $this->objFromFixture('Page', 'about');
 		$staff    = $this->objFromFixture('Page', 'staff');