1 files changed, 2 insertions, 3 deletions
diff --git a/container-core/src/main/java/com/yahoo/container/handler/metrics/ErrorResponse.java b/container-core/src/main/java/com/yahoo/container/handler/metrics/ErrorResponse.java
index b553763c2b5..650555bf427 100644
--- a/container-core/src/main/java/com/yahoo/container/handler/metrics/ErrorResponse.java
+++ b/container-core/src/main/java/com/yahoo/container/handler/metrics/ErrorResponse.java
@@ -1,6 +1,7 @@
 // Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.container.handler.metrics;
 
+import ai.vespa.json.Jackson;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
@@ -16,15 +17,13 @@ public class ErrorResponse extends JsonResponse {
 
     private static final Logger log = Logger.getLogger(ErrorResponse.class.getName());
 
-    private static final ObjectMapper objectMapper = new ObjectMapper();
-
     public ErrorResponse(int code, String message) {
         super(code, asErrorJson(message != null ? message : "<null>"));
     }
 
     static String asErrorJson(String message) {
         try {
-            return objectMapper.writeValueAsString(Map.of("error", message));
+            return Jackson.mapper().writeValueAsString(Map.of("error", message));
         } catch (JsonProcessingException e) {
             log.log(WARNING, "Could not encode error message to json:", e);
             return "Could not encode error message to json, check the log for details.";