diff --git a/src/HotChocolate/Core/src/Types/Types/Directives/Tag.cs b/src/HotChocolate/Core/src/Types/Types/Directives/Tag.cs
index 474aa3a5c18..5f30ab8bfa2 100644
--- a/src/HotChocolate/Core/src/Types/Types/Directives/Tag.cs
+++ b/src/HotChocolate/Core/src/Types/Types/Directives/Tag.cs
@@ -1,3 +1,5 @@
+#nullable enable
+
 using System;
 using HotChocolate.Properties;
 using HotChocolate.Utilities;
diff --git a/src/HotChocolate/Core/test/Types.Tests/Types/Directives/__snapshots__/TagDirectiveTests.EnsureAllLocationsAreApplied.graphql b/src/HotChocolate/Core/test/Types.Tests/Types/Directives/__snapshots__/TagDirectiveTests.EnsureAllLocationsAreApplied.graphql
index da3d3bc79d7..5f2f4ff9cd5 100644
--- a/src/HotChocolate/Core/test/Types.Tests/Types/Directives/__snapshots__/TagDirectiveTests.EnsureAllLocationsAreApplied.graphql
+++ b/src/HotChocolate/Core/test/Types.Tests/Types/Directives/__snapshots__/TagDirectiveTests.EnsureAllLocationsAreApplied.graphql
@@ -26,4 +26,4 @@ enum FooEnum @tag(name: "OnEnum") {
 
 directive @foo(arg: String @tag(name: "OnDirectiveArgument")) on QUERY
 
-directive @tag(name: String) repeatable on SCHEMA | SCALAR | OBJECT | FIELD_DEFINITION | ARGUMENT_DEFINITION | INTERFACE | UNION | ENUM | ENUM_VALUE | INPUT_OBJECT | INPUT_FIELD_DEFINITION
\ No newline at end of file
+directive @tag(name: String!) repeatable on SCHEMA | SCALAR | OBJECT | FIELD_DEFINITION | ARGUMENT_DEFINITION | INTERFACE | UNION | ENUM | ENUM_VALUE | INPUT_OBJECT | INPUT_FIELD_DEFINITION
\ No newline at end of file