diff --git a/storm-core/src/jvm/org/apache/storm/tuple/Fields.java b/storm-core/src/jvm/org/apache/storm/tuple/Fields.java
index 1c6bd5c..840b2d3 100644
--- a/storm-core/src/jvm/org/apache/storm/tuple/Fields.java
+++ b/storm-core/src/jvm/org/apache/storm/tuple/Fields.java
@@ -59,8 +59,8 @@
      */
     public List<Object> select(Fields selector, List<Object> tuple) {
         List<Object> ret = new ArrayList<>(selector.size());
-        for(String s: selector) {
-            ret.add(tuple.get(_index.get(s)));
+        for (String s : selector) {
+            ret.add(tuple.get(fieldIndex(s))); 
         }
         return ret;
     }