diff --git a/platform/core-impl/src/com/intellij/psi/impl/source/tree/LightTreeUtil.java b/platform/core-impl/src/com/intellij/psi/impl/source/tree/LightTreeUtil.java
index 5d67cc9e1429..f25eb7447a1a 100644
--- a/platform/core-impl/src/com/intellij/psi/impl/source/tree/LightTreeUtil.java
+++ b/platform/core-impl/src/com/intellij/psi/impl/source/tree/LightTreeUtil.java
@@ -146,7 +146,6 @@ public class LightTreeUtil {
     for (int i = 0, size = children.size(); i < size; ++i) {
       toBuffer(tree, children.get(i), buffer, skipTypes);
     }
-    tree.disposeChildren(children);
   }
 
   @Nullable