diff --git a/platform/lang-impl/src/com/intellij/codeInspection/ui/InspectionResultsViewComparator.java b/platform/lang-impl/src/com/intellij/codeInspection/ui/InspectionResultsViewComparator.java
index 9f756ed1d53a..2c14b7d11249 100644
--- a/platform/lang-impl/src/com/intellij/codeInspection/ui/InspectionResultsViewComparator.java
+++ b/platform/lang-impl/src/com/intellij/codeInspection/ui/InspectionResultsViewComparator.java
@@ -1,5 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
-
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.codeInspection.ui;
 
 import com.intellij.codeInspection.CommonProblemDescriptor;
@@ -29,6 +28,7 @@ public final class InspectionResultsViewComparator implements Comparator<Inspect
 
   @Override
   public int compare(InspectionTreeNode node1, InspectionTreeNode node2) {
+    if (node1 == node2) return 0;
     if (node1 instanceof InspectionSeverityGroupNode groupNode1 && node2 instanceof InspectionSeverityGroupNode groupNode2) {
       return -groupNode1.getSeverityRegistrar().compare(groupNode1.getSeverityLevel().getSeverity(), groupNode2.getSeverityLevel().getSeverity());
     }