diff --git a/scripts/codegen/rust.ts b/scripts/codegen/rust.ts
index b3cc5d5753..776f468495 100644
--- a/scripts/codegen/rust.ts
+++ b/scripts/codegen/rust.ts
@@ -85,6 +85,12 @@ const STRING_NEWTYPE_OVERRIDES: Record<string, string> = {
 	requestId: "RequestId",
 };
 
+const STRING_ENUM_VARIANT_OVERRIDES: Record<string, Record<string, string>> = {
+	CatalogTrustEligibility: {
+		unknown: "UnknownValue",
+	},
+};
+
 // ── Naming helpers ──────────────────────────────────────────────────────────
 
 function toPascalCase(s: string): string {
@@ -115,8 +121,9 @@ function uniqueRustPascalIdentifier(
 	used: Set<string>,
 	fallback: string,
 	reserved: Set<string> = new Set(),
+	override?: string,
 ): string {
-	const identifier = toRustPascalIdentifier(value, fallback);
+	const identifier = override ?? toRustPascalIdentifier(value, fallback);
 	if (used.has(identifier) || reserved.has(identifier)) {
 		throw new Error(
 			`Generated Rust enum variant identifier "${identifier}" is not unique for value "${value}". Add an explicit naming rule instead of stabilizing an arbitrary public variant name.`,
@@ -1045,6 +1052,7 @@ function emitRustStringEnum(
 			usedVariantNames,
 			"Value",
 			reservedVariantNames,
+			STRING_ENUM_VARIANT_OVERRIDES[enumName]?.[value],
 		);
 		pushRustDoc(lines, enumValueDescriptions?.[value], "    ");
 		if (variantName !== value) {