diff --git a/platform/external-system-api/src/com/intellij/openapi/externalSystem/model/DataNode.java b/platform/external-system-api/src/com/intellij/openapi/externalSystem/model/DataNode.java
index 4658f0c7b9f0..edfd3059c0d1 100644
--- a/platform/external-system-api/src/com/intellij/openapi/externalSystem/model/DataNode.java
+++ b/platform/external-system-api/src/com/intellij/openapi/externalSystem/model/DataNode.java
@@ -45,7 +45,7 @@ public class DataNode<T> implements Serializable {
   private static final Logger LOG = Logger.getInstance(DataNode.class);
 
   @NotNull private final List<DataNode<?>> myChildren = ContainerUtilRt.newArrayList();
-  @NotNull private final List<DataNode<?>> myChildrenView = Collections.unmodifiableList(myChildren);
+  @NotNull private transient List<DataNode<?>> myChildrenView = Collections.unmodifiableList(myChildren);
 
   @NotNull private final Key<T> myKey;
   private transient T myData;
@@ -241,6 +241,12 @@ public class DataNode<T> implements Serializable {
     out.defaultWriteObject();
   }
 
+  private void readObject(ObjectInputStream in)
+    throws IOException, ClassNotFoundException {
+    in.defaultReadObject();
+    myChildrenView = Collections.unmodifiableList(myChildren);
+  }
+
   public byte[] getDataBytes() throws IOException {
     if (myRawData != null) return myRawData;