diff --git a/src/main/java/com/fasterxml/jackson/databind/MappingIterator.java b/src/main/java/com/fasterxml/jackson/databind/MappingIterator.java
index 34f0e8f619..312b71ba55 100644
--- a/src/main/java/com/fasterxml/jackson/databind/MappingIterator.java
+++ b/src/main/java/com/fasterxml/jackson/databind/MappingIterator.java
@@ -162,6 +162,14 @@ protected MappingIterator(JavaType type, JsonParser p, DeserializationContext ct
         }
     }
 
+    /**
+     * Copy-constructor that sub-classes can use when creating new instances
+     * by fluent-style construction
+     */
+    protected MappingIterator(MappingIterator<T> src) {
+        this(src._type, src._parser, src._context, src._deserializer, src._closeParser, src._updatedValue);
+    }
+
     /**
      * Method for getting an "empty" iterator instance: one that never
      * has more values; may be freely shared.