diff --git a/java/java-impl/src/com/intellij/slicer/SlicePanel.java b/java/java-impl/src/com/intellij/slicer/SlicePanel.java
index fea2f4fbcb25..ebbcc76b799f 100644
--- a/java/java-impl/src/com/intellij/slicer/SlicePanel.java
+++ b/java/java-impl/src/com/intellij/slicer/SlicePanel.java
@@ -90,7 +90,7 @@ public abstract class SlicePanel extends JPanel implements TypeSafeDataProvider,
       }
 
       public void stateChanged() {
-        if (project.isDisposed()) return;
+        if (!project.isOpen()) return;
         if (toolWindow.getAnchor() != myAnchor) {
           myAnchor = myToolWindow.getAnchor();
           layoutPanel();