diff --git a/plugins/ant/src/com/intellij/lang/ant/config/explorer/AntExplorerTreeStructure.java b/plugins/ant/src/com/intellij/lang/ant/config/explorer/AntExplorerTreeStructure.java
index a86f1bc05425..cf40ffd23dbf 100644
--- a/plugins/ant/src/com/intellij/lang/ant/config/explorer/AntExplorerTreeStructure.java
+++ b/plugins/ant/src/com/intellij/lang/ant/config/explorer/AntExplorerTreeStructure.java
@@ -53,6 +53,11 @@ final class AntExplorerTreeStructure extends AbstractTreeStructure {
     return true;
   }
 
+  @Override
+  public boolean isAlwaysLeaf(Object element) {
+    return element != myRoot && !(element instanceof AntBuildFile);
+  }
+
   @Override
   @NotNull
   public AntNodeDescriptor createDescriptor(Object element, NodeDescriptor parentDescriptor) {