diff --git a/java/debugger/impl/src/com/intellij/debugger/memory/ui/ClassesFilteredView.java b/java/debugger/impl/src/com/intellij/debugger/memory/ui/ClassesFilteredView.java
index b4a405b5167a..32ee1c20ef61 100644
--- a/java/debugger/impl/src/com/intellij/debugger/memory/ui/ClassesFilteredView.java
+++ b/java/debugger/impl/src/com/intellij/debugger/memory/ui/ClassesFilteredView.java
@@ -102,7 +102,7 @@ public class ClassesFilteredView extends BorderLayoutPanel implements Disposable
   /**
    * Indicates that view is visible
    */
-  private boolean myIsActive;
+  private volatile boolean myIsActive;
 
   public ClassesFilteredView(@NotNull XDebugSession debugSession,
                              @NotNull DebugProcessImpl debugProcess,