diff --git a/util-jackson/src/main/scala/com/twitter/util/jackson/ScalaObjectMapper.scala b/util-jackson/src/main/scala/com/twitter/util/jackson/ScalaObjectMapper.scala
index 3925995598..496122b164 100644
--- a/util-jackson/src/main/scala/com/twitter/util/jackson/ScalaObjectMapper.scala
+++ b/util-jackson/src/main/scala/com/twitter/util/jackson/ScalaObjectMapper.scala
@@ -412,7 +412,7 @@ object ScalaObjectMapper {
 
 private[jackson] object ArrayElementsOnNewLinesPrettyPrinter extends DefaultPrettyPrinter {
   _arrayIndenter = DefaultIndenter.SYSTEM_LINEFEED_INSTANCE
-  override def createInstance(): DefaultPrettyPrinter = this
+  override def createInstance(): DefaultPrettyPrinter = new DefaultPrettyPrinter(this)
 }
 
 /**