diff --git a/src/NzbDrone.Core/CustomFormats/Specifications/LanguageSpecification.cs b/src/NzbDrone.Core/CustomFormats/Specifications/LanguageSpecification.cs
index 490c985e8ac..ed74b1b45d1 100644
--- a/src/NzbDrone.Core/CustomFormats/Specifications/LanguageSpecification.cs
+++ b/src/NzbDrone.Core/CustomFormats/Specifications/LanguageSpecification.cs
@@ -10,7 +10,7 @@ public class LanguageSpecificationValidator : AbstractValidator<LanguageSpecific
     {
         public LanguageSpecificationValidator()
         {
-            RuleFor(c => c.Value).NotEmpty();
+            RuleFor(c => c.Value).GreaterThanOrEqualTo(0);
             RuleFor(c => c.Value).Custom((value, context) =>
             {
                 if (!Language.All.Any(o => o.Id == value))