diff --git a/backend/src/services/MessageServices/ListMessagesService.ts b/backend/src/services/MessageServices/ListMessagesService.ts
index 7656472..5791420 100644
--- a/backend/src/services/MessageServices/ListMessagesService.ts
+++ b/backend/src/services/MessageServices/ListMessagesService.ts
@@ -21,6 +21,12 @@ const ListMessagesService = async ({
   pageNumber = "1",
   ticketId
 }: Request): Promise<Response> => {
+  const ticket = await ShowTicketService(ticketId);
+
+  if (!ticket) {
+    throw new Error("No ticket found with this ID");
+  }
+
   const whereCondition = {
     body: where(
       fn("LOWER", col("body")),
@@ -30,12 +36,6 @@ const ListMessagesService = async ({
     ticketId
   };
 
-  const ticket = await ShowTicketService(ticketId);
-
-  if (!ticket) {
-    throw new Error("No ticket found with this ID");
-  }
-
   // await setMessagesAsRead(ticket);
   const limit = 20;
   const offset = limit * (+pageNumber - 1);
diff --git a/backend/src/services/UserServices/UpdateUserService.ts b/backend/src/services/UserServices/UpdateUserService.ts
index 438b85b..883ea2e 100644
--- a/backend/src/services/UserServices/UpdateUserService.ts
+++ b/backend/src/services/UserServices/UpdateUserService.ts
@@ -26,6 +26,15 @@ const UpdateUserService = async ({
   userData,
   userId
 }: Request): Promise<Response | undefined> => {
+  const user = await User.findOne({
+    where: { id: userId },
+    attributes: ["name", "id", "email", "profile"]
+  });
+
+  if (!user) {
+    throw new AppError("No user found with this ID.", 404);
+  }
+
   const schema = Yup.object().shape({
     name: Yup.string().min(2),
     email: Yup.string().email(),
@@ -40,15 +49,6 @@ const UpdateUserService = async ({
     throw new AppError(err.message);
   }
 
-  const user = await User.findOne({
-    where: { id: userId },
-    attributes: ["name", "id", "email", "profile"]
-  });
-
-  if (!user) {
-    throw new AppError("No user found with this ID.", 404);
-  }
-
   await user.update({
     email,
     password,