diff --git a/backend/src/ee/services/pki-acme/pki-acme-challenge-service.ts b/backend/src/ee/services/pki-acme/pki-acme-challenge-service.ts
index 8bfe360d4..9148b0336 100644
--- a/backend/src/ee/services/pki-acme/pki-acme-challenge-service.ts
+++ b/backend/src/ee/services/pki-acme/pki-acme-challenge-service.ts
@@ -76,7 +76,9 @@ export const pkiAcmeChallengeServiceFactory = ({
         //         challenge validation at the same time, it should be fine.
         const challengeResponse = await fetch(challengeUrl, { signal: AbortSignal.timeout(timeoutMs) });
         if (challengeResponse.status !== 200) {
-          throw new BadRequestError({ message: "ACME challenge response is not 200" });
+          throw new AcmeIncorrectResponseError({
+            message: `ACME challenge response is not 200: ${challengeResponse.status}`
+          });
         }
         const challengeResponseBody = await challengeResponse.text();
         const thumbprint = challenge.auth.account.publicKeyThumbprint;