diff --git a/code/model/BlogPost.php b/code/model/BlogPost.php
index c9acdb6..dd699d7 100644
--- a/code/model/BlogPost.php
+++ b/code/model/BlogPost.php
@@ -123,7 +123,7 @@ class BlogPost extends Page {
 				null,
 				1024
 			)->setDescription('Comma separated list of names');
-			if(!$this->canEditAuthors()) {
+			if(!$self->canEditAuthors()) {
 				$authorField = $authorField->performDisabledTransformation();
 				$authorNames = $authorNames->performDisabledTransformation();
 			}