diff --git a/app/Http/Requests/ClientPortal/RegisterRequest.php b/app/Http/Requests/ClientPortal/RegisterRequest.php
index 26a0aa825315..b795ee609f6f 100644
--- a/app/Http/Requests/ClientPortal/RegisterRequest.php
+++ b/app/Http/Requests/ClientPortal/RegisterRequest.php
@@ -47,7 +47,7 @@ class RegisterRequest extends FormRequest
 
         foreach ($rules as $field => $properties) {
             if ($field === 'email') {
-                $rules[$field] = array_merge($rules[$field], ['email:rfc,dns', 'max:255', Rule::unique('client_contacts')->where('company_id', $this->company()->id)]);
+                $rules[$field] = array_merge($rules[$field], ['email:rfc,dns', 'max:191', Rule::unique('client_contacts')->where('company_id', $this->company()->id)]);
             }
 
             if ($field === 'current_password') {