diff --git a/src/index.ts b/src/index.ts
index f96bae70e..aabc29196 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -158,7 +158,6 @@ function traceIdFromRequest(request: Request): string {
     || crypto.randomUUID();
 }
 
-/* v8 ignore start */
 function safeHash(input: string): string {
   let hash = 2166136261;
   for (let i = 0; i < input.length; i += 1) {
@@ -168,6 +167,7 @@ function safeHash(input: string): string {
   return hash.toString(16).padStart(8, "0");
 }
 
+/* v8 ignore start */
 function configuredRateLimit(env: Env): number {
   const limit = Number(env.NOEMA_RATE_LIMIT_PER_MINUTE ?? "60");
   if (!Number.isFinite(limit) || limit <= 0) return 60;
diff --git a/test/coverage-ignore-operational-helpers.test.ts b/test/coverage-ignore-operational-helpers.test.ts
index 8e0faee4b..e76cf047d 100644
--- a/test/coverage-ignore-operational-helpers.test.ts
+++ b/test/coverage-ignore-operational-helpers.test.ts
@@ -10,6 +10,7 @@ describe("operational helper coverage exclusions", () => {
     "jsonResponse",
     "trustedTraceHeader",
     "traceIdFromRequest",
+    "safeHash",
   ])("keeps %s inside measured production coverage", (functionName) => {
     expect(
       ignoredRegions.some((region) => region.includes(`function ${functionName}`)),