Fix comparator

1 files changed, 1 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 29f1c2d294b..d63add5ed1d 100644
--- a/container-core/src/main/java/com/yahoo/restapi/RestApiImpl.java
+++ b/container-core/src/main/java/com/yahoo/restapi/RestApiImpl.java
@@ -157,7 +157,7 @@ class RestApiImpl implements RestApi {
             exceptionMappers.add(new ExceptionMapperHolder<>(RestApiException.class, (context, exception) -> exception.response()));
         }
         // Topologically sort children before superclasses, so most the specific match is found by iterating through mappers in order.
-        exceptionMappers.sort((a, b) -> a.type.isAssignableFrom(b.type) ? 1 : b.type.isAssignableFrom(a.type) ? -1 : 0);
+        exceptionMappers.sort((a, b) -> (a.type.isAssignableFrom(b.type) ? 1 : 0) + (b.type.isAssignableFrom(a.type) ? -1 : 0));
         return exceptionMappers;
     }