diff --git a/src/router/api_router.js b/src/router/api_router.js
index fe3c27e..6a1c652 100644
--- a/src/router/api_router.js
+++ b/src/router/api_router.js
@@ -448,7 +448,7 @@ router.post('/search-books', authenticate, async (req, res) => {
 
       if (trovato) {
         if (productfind) {
-          product = await Product.findOne({ _id: productfind._id }).exec();
+          product = await Product.findOne({ _id: productfind._id }).lean().exec();
           if (product) {
             const existingResult = results.find((r) => r._id.toString() === product._id.toString());
             if (!existingResult) {
diff --git a/src/version.txt b/src/version.txt
index 2ce74da..2833ec4 100644
--- a/src/version.txt
+++ b/src/version.txt
@@ -1 +1 @@
-1.2.77
\ No newline at end of file
+1.2.78
\ No newline at end of file