diff --git a/packages/block-library/src/classic/editor.scss b/packages/block-library/src/classic/editor.scss
index b4427ec2b21ad..306661c4e92ae 100644
--- a/packages/block-library/src/classic/editor.scss
+++ b/packages/block-library/src/classic/editor.scss
@@ -112,7 +112,7 @@
 		margin: 15px auto;
 		outline: 0;
 		cursor: default;
-		background-image: url(/wp-includes/js/tinymce/skins/wordpress/images/more-2x.png);
+		background-image: url(data:image/png;base64,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);
 		background-size: 1900px 20px;
 		background-repeat: no-repeat;
 		background-position: center;