diff --git a/source/com/intellij/ide/util/treeView/AbstractTreeBuilder.java b/source/com/intellij/ide/util/treeView/AbstractTreeBuilder.java
index d0d944bc75fa..8223e16ed3ae 100644
--- a/source/com/intellij/ide/util/treeView/AbstractTreeBuilder.java
+++ b/source/com/intellij/ide/util/treeView/AbstractTreeBuilder.java
@@ -84,6 +84,7 @@ public abstract class AbstractTreeBuilder {
     if (myWorker != null) {
       myWorker.dispose(true);
     }
+    TREE_NODE_WRAPPER.setValue(null);
     myProgress.cancel();
   }