diff --git a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Schemas/DomainObject/Guards/GuardSchemaTests.cs b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Schemas/DomainObject/Guards/GuardSchemaTests.cs
index ecb1c2e23..06249f80f 100644
--- a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Schemas/DomainObject/Guards/GuardSchemaTests.cs
+++ b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Schemas/DomainObject/Guards/GuardSchemaTests.cs
@@ -669,7 +669,7 @@ public class GuardSchemaTests : GivenContext, IClassFixture<TranslationsFixture>
         };
 
         ValidationAssert.Throws(() => GuardSchema.CanUpdateSchema(command),
-            new ValidationError("Size must be between 1 and 3.", "Properties.SearchFields"));
+            new ValidationError("Size must be between 1 and 4.", "Properties.SearchFields"));
     }
 
     private CreateSchema CreateCommand(CreateSchema command)