diff --git a/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/PrintElementManagerImpl.java b/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/PrintElementManagerImpl.java
index f039ae01395a..5cf0a415a9dd 100644
--- a/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/PrintElementManagerImpl.java
+++ b/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/PrintElementManagerImpl.java
@@ -15,7 +15,6 @@
  */
 package com.intellij.vcs.log.graph.impl.facade;
 
-import com.intellij.util.NotNullFunction;
 import com.intellij.vcs.log.graph.GraphColorManager;
 import com.intellij.vcs.log.graph.api.LinearGraph;
 import com.intellij.vcs.log.graph.api.elements.GraphEdge;
@@ -46,14 +45,10 @@ class PrintElementManagerImpl implements PrintElementManager {
                           @NotNull GraphColorManager colorManager) {
     myLinearGraph = linearGraph;
     myColorGetter = new ColorGetterByLayoutIndex(linearGraph, myPermanentGraph, colorManager);
-    myGraphElementComparator = new GraphElementComparatorByLayoutIndex(new NotNullFunction<Integer, Integer>() {
-      @NotNull
-      @Override
-      public Integer fun(Integer nodeIndex) {
-        int nodeId = linearGraph.getNodeId(nodeIndex);
-        if (nodeId < 0) return nodeId;
-        return myPermanentGraph.getPermanentGraphLayout().getLayoutIndex(nodeId);
-      }
+    myGraphElementComparator = new GraphElementComparatorByLayoutIndex(nodeIndex -> {
+      int nodeId = linearGraph.getNodeId(nodeIndex);
+      if (nodeId < 0) return nodeId;
+      return myPermanentGraph.getPermanentGraphLayout().getLayoutIndex(nodeId);
     });
   }