diff --git a/apps/backend/src/lib/http/problem-mapper.ts b/apps/backend/src/lib/http/problem-mapper.ts
index b4be4a1..7b97a10 100644
--- a/apps/backend/src/lib/http/problem-mapper.ts
+++ b/apps/backend/src/lib/http/problem-mapper.ts
@@ -15,6 +15,7 @@ function statusFromError(error: AppError): ContentfulStatusCode {
     case 'conflict':
       return 409;
     case 'unexpected':
+      return 500;
     default:
       return 500;
   }