diff --git a/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/evaluate/quick/common/AbstractValueHint.java b/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/evaluate/quick/common/AbstractValueHint.java
index 5df0efee22a7..dc6c87a3902a 100644
--- a/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/evaluate/quick/common/AbstractValueHint.java
+++ b/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/evaluate/quick/common/AbstractValueHint.java
@@ -327,6 +327,10 @@ public abstract class AbstractValueHint {
   }
 
   protected <D> void showTreePopup(@NotNull DebuggerTreeCreator<D> creator, @NotNull D descriptor) {
+    if (myEditor.isDisposed()) {
+      return;
+    }
+
     createHighlighter();
     setHighlighterAttributes();