diff --git a/OutOfSchool/OutOfSchool.AuthCommon/Validators/RegisterViewModelValidator.cs b/OutOfSchool/OutOfSchool.AuthCommon/Validators/RegisterViewModelValidator.cs
index 2e7b95d8ba..41e25a0b9b 100644
--- a/OutOfSchool/OutOfSchool.AuthCommon/Validators/RegisterViewModelValidator.cs
+++ b/OutOfSchool/OutOfSchool.AuthCommon/Validators/RegisterViewModelValidator.cs
@@ -10,9 +10,9 @@ public class RegisterViewModelValidator : AbstractValidator<RegisterViewModel>
 {
     public RegisterViewModelValidator(IStringLocalizer<SharedResource> localizer)
     {
-        RuleFor(x => x.DateOfBirth).Must(x => x == null)
+        RuleFor(x => x.DateOfBirth).Must(x => x != DateTime.MinValue)
             .WithMessage(localizer["Check the entered data. This field DateOfBirth is required."]);
-            
+
         RuleFor(x => x.DateOfBirth)
           .Must(BeAdult).When(x => !x.ProviderRegistration).WithMessage(localizer["You must be at least 18 years old."]);
     }