diff --git a/src/main/java/mpicbg/spim/data/sequence/ViewId.java b/src/main/java/mpicbg/spim/data/sequence/ViewId.java
index 5ee735d..f4bd7dd 100644
--- a/src/main/java/mpicbg/spim/data/sequence/ViewId.java
+++ b/src/main/java/mpicbg/spim/data/sequence/ViewId.java
@@ -28,13 +28,15 @@
  */
 package mpicbg.spim.data.sequence;
 
+import java.io.Serializable;
+
 /**
  * Identifies a particular view as a combination of a {@link TimePoint} id and a
  * {@link ViewSetup} id.
  *
  * @author Tobias Pietzsch <tobias.pietzsch@gmail.com>
  */
-public class ViewId implements Comparable< ViewId >
+public class ViewId implements Comparable< ViewId >, Serializable
 {
 	/**
 	 * The timepoint id.