diff --git a/wp-includes/comment.php b/wp-includes/comment.php
index 9bd6fb2171..aabe9f60db 100644
--- a/wp-includes/comment.php
+++ b/wp-includes/comment.php
@@ -3060,22 +3060,19 @@ function do_trackbacks( $post ) {
 	$post_title = apply_filters( 'the_title', $post->post_title, $post->ID );
 	$post_title = strip_tags( $post_title );
 
-	if ( $to_ping ) {
-		foreach ( (array) $to_ping as $tb_ping ) {
-			$tb_ping = trim( $tb_ping );
-			if ( ! in_array( $tb_ping, $pinged, true ) ) {
-				trackback( $tb_ping, $post_title, $excerpt, $post->ID );
-				$pinged[] = $tb_ping;
-			} else {
-				$wpdb->query(
-					$wpdb->prepare(
-						"UPDATE $wpdb->posts SET to_ping = TRIM(REPLACE(to_ping, %s,
-					'')) WHERE ID = %d",
-						$tb_ping,
-						$post->ID
-					)
-				);
-			}
+	foreach ( (array) $to_ping as $tb_ping ) {
+		$tb_ping = trim( $tb_ping );
+		if ( ! in_array( $tb_ping, $pinged, true ) ) {
+			trackback( $tb_ping, $post_title, $excerpt, $post->ID );
+			$pinged[] = $tb_ping;
+		} else {
+			$wpdb->query(
+				$wpdb->prepare(
+					"UPDATE $wpdb->posts SET to_ping = TRIM(REPLACE(to_ping, %s, '')) WHERE ID = %d",
+					$tb_ping,
+					$post->ID
+				)
+			);
 		}
 	}
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 9bf424bfdc..a1e96fd095 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.9-alpha-60405';
+$wp_version = '6.9-alpha-60406';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.