diff --git a/src/wp-admin/includes/post.php b/src/wp-admin/includes/post.php
index bf49ed4fc8..83756e695a 100644
--- a/src/wp-admin/includes/post.php
+++ b/src/wp-admin/includes/post.php
@@ -1327,14 +1327,14 @@ function get_sample_permalink_html( $id, $new_title = null, $new_slug = null ) {
 		}
 	} else {
 		if ( function_exists( 'mb_strlen' ) ) {
-			if ( mb_strlen( $post_name ) > 30 ) {
-				$post_name_abridged = mb_substr( $post_name, 0, 14 ) . '…' . mb_substr( $post_name, -14 );
+			if ( mb_strlen( $post_name ) > 34 ) {
+				$post_name_abridged = mb_substr( $post_name, 0, 16 ) . '…' . mb_substr( $post_name, -16 );
 			} else {
 				$post_name_abridged = $post_name;
 			}
 		} else {
-			if ( strlen( $post_name ) > 30 ) {
-				$post_name_abridged = substr( $post_name, 0, 14 ) . '…' . substr( $post_name, -14 );
+			if ( strlen( $post_name ) > 34 ) {
+				$post_name_abridged = substr( $post_name, 0, 16 ) . '…' . substr( $post_name, -16 );
 			} else {
 				$post_name_abridged = $post_name;
 			}