diff --git a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/StructuredMemberWriter.java b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/StructuredMemberWriter.java
index 7832af7b536..c336e7c0f1e 100644
--- a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/StructuredMemberWriter.java
+++ b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/StructuredMemberWriter.java
@@ -542,7 +542,7 @@ private void writeShapeValidator(TypeScriptWriter writer,
                             }
                             writer.write("], [");
                             for (MemberShape member : shape.asEnumShape().get().getAllMembers().values()) {
-                                if (!member.hasTrait((InternalTrait.class))) {
+                                if (!member.hasTrait((InternalTrait.class)) && !member.hasTag("internal")) {
                                     writer.write("$S,", member.expectTrait(EnumValueTrait.class).expectStringValue());
                                 }
                             }