diff --git a/spring-batch-infrastructure/src/main/java/org/springframework/batch/io/file/mapping/FieldSet.java b/spring-batch-infrastructure/src/main/java/org/springframework/batch/io/file/mapping/FieldSet.java
index 51fb0f33f..a9b403317 100644
--- a/spring-batch-infrastructure/src/main/java/org/springframework/batch/io/file/mapping/FieldSet.java
+++ b/spring-batch-infrastructure/src/main/java/org/springframework/batch/io/file/mapping/FieldSet.java
@@ -31,7 +31,7 @@ import org.springframework.util.StringUtils;
  * @author Rob Harrop
  * @author Dave Syer
  */
-public final class FieldSet {
+public class FieldSet {
 
 	private final static String DEFAULT_DATE_PATTERN = "yyyy-MM-dd";