diff --git a/platform/lang-impl/src/com/intellij/ide/projectView/impl/ProjectViewPane.java b/platform/lang-impl/src/com/intellij/ide/projectView/impl/ProjectViewPane.java
index 880a52185b5a..4ae6d5777a4a 100644
--- a/platform/lang-impl/src/com/intellij/ide/projectView/impl/ProjectViewPane.java
+++ b/platform/lang-impl/src/com/intellij/ide/projectView/impl/ProjectViewPane.java
@@ -194,7 +194,7 @@ public class ProjectViewPane extends AbstractProjectViewPSIPane {
 
     @Override
     public boolean isToBuildChildrenInBackground(Object element) {
-      return true;
+      return !(element instanceof AbstractTreeNode) || !((AbstractTreeNode)element).isAlwaysLeaf();
     }
   }