diff --git a/frontend/src/routes/register/index.tsx b/frontend/src/routes/register/index.tsx
index b5be11607bee62544ba147b745aa6b85cdd9bde2..528194c5076b2b3d2959e605fd0ef37d7ab275b0 100644
--- a/frontend/src/routes/register/index.tsx
+++ b/frontend/src/routes/register/index.tsx
@@ -71,7 +71,7 @@ export default function Register() {
   } = useForm<RegisterFormData>()
   const onSubmit = handleSubmit(submit)
 
-  useEffect(()=> {
+  useEffect(() => {
     register('date_of_birth')
   }, [register])
 
@@ -103,7 +103,7 @@ export default function Register() {
                 inputFormat='yyyy-MM-dd'
                 onChange={(value) => {
                   setDate(value)
-                  setValue('date_of_birth', value, {shouldValidate: true, shouldDirty: true})
+                  setValue('date_of_birth', value, { shouldValidate: true, shouldDirty: true })
                 }}
                 renderInput={(params) => <TextField {...params} />}
               />
@@ -125,6 +125,7 @@ export default function Register() {
 
               <Controller name='role_type'
                           control={control}
+                          defaultValue=''
                           rules={{
                             required: t(
                               'validation.roleTypeRequired').toString(),
@@ -133,6 +134,7 @@ export default function Register() {
                             <Select
                               labelId='roletype-select-label'
                               id='roletype-select'
+                              defaultValue={undefined}
                               error={!!errors.role_type}
                               label={t('input.roleType')}
                               onChange={(role) => {
@@ -142,9 +144,10 @@ export default function Register() {
                                 field.onChange(value)
                               }}
                             >
+                              <MenuItem value={undefined}>{undefined}</MenuItem>
                               {
                                 roletypes.map((roletype) => (
-                                  <MenuItem value={roletype.identifier}>{roletype.name_nb}</MenuItem>
+                                <MenuItem value={roletype.identifier}>{roletype.name_nb}</MenuItem>
                                 ))
                               }
                             </Select>