diff --git a/src/wp-includes/block-supports/shadow.php b/src/wp-includes/block-supports/shadow.php
index 6fa05b248f4c4..0ccaf3fd44b76 100644
--- a/src/wp-includes/block-supports/shadow.php
+++ b/src/wp-includes/block-supports/shadow.php
@@ -58,9 +58,8 @@ function wp_apply_shadow_support( $block_type, $block_attributes ) {
 
 	$shadow_block_styles = array();
 
-	$preset_shadow                 = array_key_exists( 'shadow', $block_attributes ) ? "var:preset|shadow|{$block_attributes['shadow']}" : null;
-	$custom_shadow                 = isset( $block_attributes['style']['shadow'] ) ? $block_attributes['style']['shadow'] : null;
-	$shadow_block_styles['shadow'] = $preset_shadow ? $preset_shadow : $custom_shadow;
+	$custom_shadow                 = $block_attributes['style']['shadow'] ?? null;
+	$shadow_block_styles['shadow'] = $custom_shadow;
 
 	$attributes = array();
 	$styles     = wp_style_engine_get_styles( $shadow_block_styles );