diff --git a/code/compat/pages/BlogEntry.php b/code/compat/pages/BlogEntry.php
index b6ce218..17b21ca 100644
--- a/code/compat/pages/BlogEntry.php
+++ b/code/compat/pages/BlogEntry.php
@@ -50,9 +50,12 @@ class BlogEntry extends BlogPost implements MigratableObject {
 
 		$this->PublishDate = $this->Date;
 
-		$this->ClassName = 'BlogPost';
-		$this->RecordClassName = 'BlogPost';
-
+		// If a user has subclassed BlogEntry, it should not be turned into a BlogPost.
+		if($this->ClassName === 'BlogEntry') {
+			$this->ClassName = 'BlogPost';
+			$this->RecordClassName = 'BlogPost';
+		}
+		
 		$this->write();
 	}