diff --git a/src/controllers/profile.controller.ts b/src/controllers/profile.controller.ts
index 6165486..001df3a 100644
--- a/src/controllers/profile.controller.ts
+++ b/src/controllers/profile.controller.ts
@@ -49,21 +49,16 @@ export const updateProfileHandler = async (
           reject(err)
         } else {
           try {
+            const updateData: Partial<Profile> = { ...req.body }
+
             if (req.file) {
-              const image_url = IMG_HOST + '/' + req.file?.filename
-              const { statusCode, profile, message } = await updateProfile(
-                user,
-                {
-                  ...req.body,
-                  image_url
-                }
-              )
-              return res.status(statusCode).json({ profile, message })
+              updateData.image_url = IMG_HOST + '/' + req.file.filename
             }
 
-            const { statusCode, profile, message } = await updateProfile(user, {
-              ...req.body
-            })
+            const { statusCode, profile, message } = await updateProfile(
+              user,
+              updateData
+            )
             return res.status(statusCode).json({ profile, message })
           } catch (error) {
             reject(error)
diff --git a/src/schemas/profile-routes.schema.ts b/src/schemas/profile-routes.schema.ts
index f4706d1..1885666 100644
--- a/src/schemas/profile-routes.schema.ts
+++ b/src/schemas/profile-routes.schema.ts
@@ -1,10 +1,10 @@
 import { z } from 'zod'
 
 export const updateProfileSchema = z.object({
-  primary_email: z.string().email(),
-  first_name: z.string(),
-  last_name: z.string(),
-  image_url: z.string().url()
+  primary_email: z.string().email().optional(),
+  first_name: z.string().optional(),
+  last_name: z.string().optional(),
+  image_url: z.string().url().optional()
 })
 
 export const getApplicationsSchema = z.object({
diff --git a/src/services/auth.service.ts b/src/services/auth.service.ts
index b478e98..3c0eb50 100644
--- a/src/services/auth.service.ts
+++ b/src/services/auth.service.ts
@@ -5,6 +5,7 @@ import { JWT_SECRET } from '../configs/envConfig'
 import Profile from '../entities/profile.entity'
 import { type CreateProfile, type ApiResponse } from '../types'
 import {
+  capitalizeFirstLetter,
   getPasswordChangedEmailContent,
   getPasswordResetEmailContent
 } from '../utils'
@@ -35,8 +36,8 @@ export const registerUser = async (
     const newProfile = profileRepository.create({
       primary_email: email,
       password: hashedPassword,
-      first_name,
-      last_name,
+      first_name: capitalizeFirstLetter(first_name),
+      last_name: capitalizeFirstLetter(last_name),
       image_url: ''
     })
 
diff --git a/src/services/mentee.service.ts b/src/services/mentee.service.ts
index c9912ff..d16c854 100644
--- a/src/services/mentee.service.ts
+++ b/src/services/mentee.service.ts
@@ -6,7 +6,8 @@ import { MenteeApplicationStatus } from '../enums'
 import {
   getEmailContent,
   getMentorNotifyEmailContent,
-  getMenteePublicData
+  getMenteePublicData,
+  capitalizeFirstLetter
 } from '../utils'
 import { sendEmail } from './admin/email.service'
 
@@ -78,6 +79,11 @@ export const addMentee = async (
       }
     }
 
+    application.firstName = capitalizeFirstLetter(
+      application.firstName as string
+    )
+    application.lastName = capitalizeFirstLetter(application.lastName as string)
+
     const newMentee = new Mentee(
       MenteeApplicationStatus.PENDING,
       application,
diff --git a/src/services/mentor.service.ts b/src/services/mentor.service.ts
index 9178fc5..dd7f4fa 100644
--- a/src/services/mentor.service.ts
+++ b/src/services/mentor.service.ts
@@ -5,7 +5,11 @@ import Mentor from '../entities/mentor.entity'
 import type Profile from '../entities/profile.entity'
 import { MentorApplicationStatus } from '../enums'
 import { type PaginatedApiResponse } from '../types'
-import { getEmailContent, getMentorPublicData } from '../utils'
+import {
+  capitalizeFirstLetter,
+  getEmailContent,
+  getMentorPublicData
+} from '../utils'
 import { sendEmail } from './admin/email.service'
 
 export const createMentor = async (
@@ -72,6 +76,11 @@ export const createMentor = async (
       }
     }
 
+    application.firstName = capitalizeFirstLetter(
+      application.firstName as string
+    )
+    application.lastName = capitalizeFirstLetter(application.lastName as string)
+
     const newMentor = new Mentor(
       MentorApplicationStatus.PENDING,
       category,
diff --git a/src/services/profile.service.ts b/src/services/profile.service.ts
index b3c5156..95c8acd 100644
--- a/src/services/profile.service.ts
+++ b/src/services/profile.service.ts
@@ -2,11 +2,12 @@ import { dataSource } from '../configs/dbConfig'
 import Mentee from '../entities/mentee.entity'
 import Mentor from '../entities/mentor.entity'
 import Profile from '../entities/profile.entity'
+import { type CreateProfile } from '../types'
 import { getMentorPublicData } from '../utils'
 
 export const updateProfile = async (
   user: Profile,
-  { primary_email, first_name, last_name, image_url }: Partial<Profile>
+  updateData: Partial<Profile>
 ): Promise<{
   statusCode: number
   profile?: Profile | null
@@ -14,14 +15,19 @@ export const updateProfile = async (
 }> => {
   try {
     const profileRepository = dataSource.getRepository(Profile)
+
+    const { primary_email, first_name, last_name, image_url } = updateData
+
+    const updatedFields: Partial<Profile> = {
+      primary_email,
+      first_name,
+      last_name,
+      image_url
+    }
+
     await profileRepository.update(
       { uuid: user.uuid },
-      {
-        primary_email,
-        first_name,
-        last_name,
-        image_url
-      }
+      updatedFields as CreateProfile
     )
 
     const savedProfile = await profileRepository.findOneBy({
diff --git a/src/utils.ts b/src/utils.ts
index d2d338b..7d1bff2 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -313,3 +313,7 @@ export const getPasswordChangedEmailContent = (
     `
   }
 }
+
+export const capitalizeFirstLetter = (word: string): string => {
+  return word.charAt(0).toUpperCase() + word.slice(1).toLowerCase()
+}