diff --git a/lucene/core/src/java/org/apache/lucene/codecs/SimpleDocValuesFormat.java b/lucene/core/src/java/org/apache/lucene/codecs/SimpleDocValuesFormat.java
index 839c30ec9f3..0a6f87dde1a 100644
--- a/lucene/core/src/java/org/apache/lucene/codecs/SimpleDocValuesFormat.java
+++ b/lucene/core/src/java/org/apache/lucene/codecs/SimpleDocValuesFormat.java
@@ -19,6 +19,7 @@ package org.apache.lucene.codecs;
 
 import java.io.IOException;
 
+import org.apache.lucene.index.SegmentReadState;
 import org.apache.lucene.index.SegmentWriteState;
 
 public abstract class SimpleDocValuesFormat {
@@ -30,5 +31,5 @@ public abstract class SimpleDocValuesFormat {
 
   public abstract SimpleDVConsumer fieldsConsumer(SegmentWriteState state) throws IOException;
   // nocommit do this:
-  //public abstract SimpleDVProducer fieldsProducer(SegmentReadState state) throws IOException;
+  public abstract PerDocProducer fieldsProducer(SegmentReadState state) throws IOException;
 }
diff --git a/lucene/core/src/java/org/apache/lucene/index/SortedBytesDVWriter.java b/lucene/core/src/java/org/apache/lucene/index/SortedBytesDVWriter.java
index 78f0d2d851d..556e57b49fd 100644
--- a/lucene/core/src/java/org/apache/lucene/index/SortedBytesDVWriter.java
+++ b/lucene/core/src/java/org/apache/lucene/index/SortedBytesDVWriter.java
@@ -142,4 +142,4 @@ class SortedBytesDVWriter {
     fixedLength = -2;
     maxLength = 0;
   }
-}
\ No newline at end of file
+}