diff --git a/app/Models/BooksModel.php b/app/Models/BooksModel.php
index 9dc67d01..e639f977 100644
--- a/app/Models/BooksModel.php
+++ b/app/Models/BooksModel.php
@@ -30,7 +30,7 @@ class BooksModel extends Model
     public function getnonMembershiplist($business_id)
 {
     $builder = $this->builder();
-    $builder->select('books.book_id, books.title, books.price, books.duration,books.isactive,books.publisher,books.genre,books.language,books.publication_date,GROUP_CONCAT(category.name SEPARATOR ',') as name');
+    $builder->select('books.book_id, books.title, books.price, books.duration, books.isactive, books.publisher, books.genre, books.language, books.publication_date, GROUP_CONCAT(category.name SEPARATOR \',\') as name');
     $builder->join('book_categories', 'book_categories.book_id = books.book_id', 'left');
     $builder->join('category', 'category.id = book_categories.category_id', 'left');
     $builder->where('books.business_id', $business_id);