diff --git a/app/src/main/java/es/verdnatura/presentation/view/feature/restaurant/RestaurantActivity.kt b/app/src/main/java/es/verdnatura/presentation/view/feature/restaurant/RestaurantActivity.kt
index 3e95ea3e..1f4bd47a 100644
--- a/app/src/main/java/es/verdnatura/presentation/view/feature/restaurant/RestaurantActivity.kt
+++ b/app/src/main/java/es/verdnatura/presentation/view/feature/restaurant/RestaurantActivity.kt
@@ -2,14 +2,12 @@ package es.verdnatura.presentation.view.feature.restaurant
 
 import android.view.View
 import android.widget.Button
-import com.google.gson.Gson
 import com.google.zxing.BarcodeFormat
 import com.journeyapps.barcodescanner.BarcodeEncoder
 import es.verdnatura.R
 import es.verdnatura.databinding.ActivityRestaurantViewBinding
 import es.verdnatura.domain.toast
 import es.verdnatura.presentation.base.BaseActivity
-import es.verdnatura.presentation.view.feature.restaurant.model.UserMenu
 
 class RestaurantActivity : BaseActivity<ActivityRestaurantViewBinding>() {
 
@@ -33,16 +31,27 @@ class RestaurantActivity : BaseActivity<ActivityRestaurantViewBinding>() {
         binding.imageQr.visibility = View.VISIBLE
         binding.txtOption.visibility = View.VISIBLE
         binding.txtOption.text = (view as Button).text.toString()
-        val userMenu = UserMenu(
-            user = mobileApplication.userId!!,
-            menu_id = view.tag.toString().toInt(),
-            menu = view.text.toString(),
-            name = mobileApplication.userName!!
-        )
+        /* val userMenu = UserMenu(
+             user = mobileApplication.userId!!,
+             menu_id = view.tag.toString().toInt(),
+             menu = view.text.toString(),
+             name = mobileApplication.userName!!
+         )*/
+
+        val userMenuJson = StringBuilder()
+            .append("{")
+            .append("\"user\":").append(mobileApplication.userId).append(",") // Sin comillas
+            .append("\"menu_id\":").append(view.tag.toString().toInt()).append(",") // Sin comillas
+            .append("\"menu\":\"").append(view.text).append("\",") // Con comillas porque es texto
+            .append("\"name\":\"").append(mobileApplication.userName)
+            .append("\"") // Con comillas porque es texto
+            .append("}")
+            .toString()
+
         try {
             val barcodeEncoder = BarcodeEncoder()
             val bitmap = barcodeEncoder.encodeBitmap(
-                Gson().toJson(userMenu),
+                userMenuJson,
                 BarcodeFormat.QR_CODE,
                 400,
                 400
diff --git a/app/src/main/java/es/verdnatura/presentation/view/feature/restaurant/model/UserMenu.kt b/app/src/main/java/es/verdnatura/presentation/view/feature/restaurant/model/UserMenu.kt
index 42157440..631babb9 100644
--- a/app/src/main/java/es/verdnatura/presentation/view/feature/restaurant/model/UserMenu.kt
+++ b/app/src/main/java/es/verdnatura/presentation/view/feature/restaurant/model/UserMenu.kt
@@ -1,8 +1,10 @@
 package es.verdnatura.presentation.view.feature.restaurant.model
 
+import com.google.gson.annotations.SerializedName
+
 data class UserMenu(
-    val user: Int,
-    val menu_id: Int,
-    val menu: String,
-    val name: String
+    @SerializedName("user") val user: Int,
+    @SerializedName("menu_id") val menu_id: Int,
+    @SerializedName("menu") val menu: String,
+    @SerializedName("name") val name: String
 )
\ No newline at end of file