diff --git a/loopback/locale/es.json b/loopback/locale/es.json
index 6bf4d79e3b..362df81108 100644
--- a/loopback/locale/es.json
+++ b/loopback/locale/es.json
@@ -248,7 +248,8 @@
 	"App locked": "Aplicación bloqueada por el usuario {{userId}}",
 	"Email verify": "Correo de verificación",
 	"Landing cannot be lesser than shipment": "Landing cannot be lesser than shipment",
-    "Receipt's bank was not found": "No se encontró el banco del recibo",
-    "This receipt was not compensated": "Este recibo no ha sido compensado",
-    "Client's email was not found": "No se encontró el email del cliente"
-}
+	"Receipt's bank was not found": "No se encontró el banco del recibo",
+	"This receipt was not compensated": "Este recibo no ha sido compensado",
+	"Client's email was not found": "No se encontró el email del cliente",
+	"Aplicación bloqueada por el usuario 9": "Aplicación bloqueada por el usuario 9"
+}
\ No newline at end of file
diff --git a/modules/mdb/back/methods/mdbApp/lock.js b/modules/mdb/back/methods/mdbApp/lock.js
index 6006d4fad0..98e61fb534 100644
--- a/modules/mdb/back/methods/mdbApp/lock.js
+++ b/modules/mdb/back/methods/mdbApp/lock.js
@@ -41,12 +41,13 @@ module.exports = Self => {
         }
 
         try {
-            const mdbApp = await models.MdbApp.findById(appName, null, myOptions);
+            const mdbApp = await models.MdbApp.findById(appName, {fields: ['app', 'locked', 'userFk']}, myOptions);
 
-            const message = $t('App locked', {
-                userId: mdbApp.userFk
-            });
-            if (mdbApp.locked) throw new UserError(message);
+            if (mdbApp.locked) {
+                throw new UserError($t('App locked', {
+                    userId: mdbApp.userFk
+                }));
+            }
 
             const updatedMdbApp = await mdbApp.updateAttributes({
                 userFk: userId,
diff --git a/modules/mdb/back/methods/mdbVersion/upload.js b/modules/mdb/back/methods/mdbVersion/upload.js
index adb155c06b..5dfe5d3ef5 100644
--- a/modules/mdb/back/methods/mdbVersion/upload.js
+++ b/modules/mdb/back/methods/mdbVersion/upload.js
@@ -64,10 +64,12 @@ module.exports = Self => {
         let srcFile;
         try {
             const mdbApp = await models.MdbApp.findById(appName, null, myOptions);
-            const message = $t('App locked', {
-                userId: mdbApp.userFk
-            });
-            if (mdbApp.locked && mdbApp.userFk != userId) throw new UserError(message);
+
+            if (mdbApp.locked && mdbApp.userFk != userId) {
+                throw new UserError($t('App locked', {
+                    userId: mdbApp.userFk
+                }));
+            }
 
             const tempContainer = await TempContainer.container('access');
             const uploaded = await TempContainer.upload(tempContainer.name, ctx.req, ctx.result, fileOptions);