Check built-in response exceptions first

1 files changed, 2 insertions, 1 deletions

diff --git a/container-core/src/main/java/com/yahoo/restapi/RestApiImpl.java b/container-core/src/main/java/com/yahoo/restapi/RestApiImpl.java
index 8ba94f9aca9..71fde8a9dbf 100644
--- a/container-core/src/main/java/com/yahoo/restapi/RestApiImpl.java
+++ b/container-core/src/main/java/com/yahoo/restapi/RestApiImpl.java
@@ -151,10 +151,11 @@ class RestApiImpl implements RestApi {
 
     private static List<ExceptionMapperHolder<?>> combineWithDefaultExceptionMappers(
             List<ExceptionMapperHolder<?>> configuredExceptionMappers, boolean disableDefaultMappers) {
-        List<ExceptionMapperHolder<?>> exceptionMappers = new ArrayList<>(configuredExceptionMappers);
+        List<ExceptionMapperHolder<?>> exceptionMappers = new ArrayList<>();
         if (!disableDefaultMappers){
             exceptionMappers.add(new ExceptionMapperHolder<>(RestApiException.class, (context, exception) -> exception.response()));
         }
+        exceptionMappers.addAll(configuredExceptionMappers);
         return exceptionMappers;
     }