diff --git a/src/main/java/ru/soune/nocopy/dto/MessageCode.java b/src/main/java/ru/soune/nocopy/dto/MessageCode.java
index 00e2597..61b92aa 100644
--- a/src/main/java/ru/soune/nocopy/dto/MessageCode.java
+++ b/src/main/java/ru/soune/nocopy/dto/MessageCode.java
@@ -6,6 +6,7 @@ public enum MessageCode {
     REG_EMAIL_OR_PHONE_EXISTS(1, "Email or phone already registered"),
     REFERRAL_LINK_IS_NOT_EXIST(1, "Refferal link is not exist"),
     INVALID_FIELD(2, "Invalid field"),
+    MAIL_VERIFIED_NULL(2, "Mail verified null"),
     INVALID_TOKEN(2, "Invalid token"),
     TOKEN_IS_ALIVE(2, "Token is alive"),
     INVALID_ACTION(2, "Invalid action"),
diff --git a/src/main/java/ru/soune/nocopy/handler/RegRequestHandler.java b/src/main/java/ru/soune/nocopy/handler/RegRequestHandler.java
index 39a100e..e3aad4e 100644
--- a/src/main/java/ru/soune/nocopy/handler/RegRequestHandler.java
+++ b/src/main/java/ru/soune/nocopy/handler/RegRequestHandler.java
@@ -58,6 +58,7 @@ public class RegRequestHandler implements RequestHandler {
         }
 
         String referralLink = regRequest.getReferralLink();
+        String mailVerified = regRequest.getMailVerified();
 
         if (referralLink != null) {
             Referral referral = referralJpaRepository.findByReferralLink(referralLink);
@@ -68,6 +69,14 @@ public class RegRequestHandler implements RequestHandler {
                         MessageCode.REFERRAL_LINK_IS_NOT_EXIST.getDescription(), Map.of(
                                 "referralLink", referralLink)));
             }
+
+            if (mailVerified == null) {
+                throw new NotValidFieldException("Mailverified is null:" + referralLink +
+                        referralLink, new BaseResponse(request.getMsgId(),
+                        MessageCode.MAIL_VERIFIED_NULL.getCode(),
+                        MessageCode.MAIL_VERIFIED_NULL.getDescription(), Map.of(
+                        "mailVerified", mailVerified)));
+            }
         }
 
         BindingResult bindingResult = new BeanPropertyBindingResult(regRequest, "regRequest");
@@ -78,7 +87,7 @@ public class RegRequestHandler implements RequestHandler {
             throw new ValidationException(bindingResult, request.getMsgId());
         }
 
-        boolean verified = regRequest.getMailVerified().equals("true");
+        boolean verified = mailVerified.equals("true");
         AuthToken authToken = authService.register(regRequest, verified);
         EmailVerificationToken emailToken = emailService.createEmailVerificationToken(authToken);
         RegAnswer regAnswer = new RegAnswer();