diff --git a/lib/block-supports/duotone.php b/lib/block-supports/duotone.php
index f3b4743832f0ae..fcf9191dc32775 100644
--- a/lib/block-supports/duotone.php
+++ b/lib/block-supports/duotone.php
@@ -361,4 +361,7 @@ function ( $selector ) use ( $duotone_id ) {
 		'register_attribute' => 'gutenberg_register_duotone_support',
 	)
 );
+
+// Remove WordPress core filter to avoid rendering duplicate support elements.
+remove_filter( 'render_block', 'wp_render_duotone_support', 10, 2 );
 add_filter( 'render_block', 'gutenberg_render_duotone_support', 10, 2 );