diff --git a/packages/block-library/src/search/index.php b/packages/block-library/src/search/index.php
index 7952a9085c51f..f76882f8b41d5 100644
--- a/packages/block-library/src/search/index.php
+++ b/packages/block-library/src/search/index.php
@@ -15,7 +15,8 @@
 function render_block_core_search( $attributes ) {
 	static $instance_id = 0;
 
-	$input_id = 'wp-block-search__input-' . ++$instance_id;
+	$input_id     = 'wp-block-search__input-' . ++$instance_id;
+	$label_markup = '';
 
 	if ( ! empty( $attributes['label'] ) ) {
 		$label_markup = sprintf(