diff --git a/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranch.java b/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranch.java
index 647bb05f4e51..885c5d14dba4 100644
--- a/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranch.java
+++ b/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranch.java
@@ -15,6 +15,7 @@
  */
 package com.intellij.vcs.log.graph.impl.facade.bek;
 
+import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.vcs.log.graph.api.LinearGraph;
 import com.intellij.vcs.log.graph.utils.TimestampGetter;
 import org.jetbrains.annotations.NotNull;
@@ -25,6 +26,7 @@ import java.util.List;
 import static com.intellij.vcs.log.graph.utils.LinearGraphUtils.getDownNodes;
 
 class BekBranch {
+  private final static Logger LOG = Logger.getInstance(BekBranch.class);
 
   private static final int MAX_BLOCK_SIZE = 20;
   private static final int MAX_DELTA_TIME = 60 * 60 * 24 * 3 * 1000;
@@ -45,7 +47,7 @@ class BekBranch {
   }
 
   public void updatePrepareForInsertPart(@NotNull TimestampGetter timestampGetter, @NotNull BekEdgeRestrictions edgeRestrictions) {
-    assert myPrepareForInsertPart == null;
+    LOG.assertTrue(myPrepareForInsertPart == null);
     int currentNode = myNodeIndexes.get(myNoInsertSize - 1);
 
     if (edgeRestrictions.hasRestriction(currentNode)) return;
@@ -83,7 +85,7 @@ class BekBranch {
   }
 
   public void doneInsertPreparedPart() {
-    assert myPrepareForInsertPart != null;
+    LOG.assertTrue(myPrepareForInsertPart != null);
     myNoInsertSize -= myPrepareForInsertPart.size();
     myPrepareForInsertPart = null;
   }
diff --git a/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranchCreator.java b/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranchCreator.java
index 171a8a4b2a71..b7024260d88f 100644
--- a/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranchCreator.java
+++ b/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranchCreator.java
@@ -1,6 +1,7 @@
 // Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.vcs.log.graph.impl.facade.bek;
 
+import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.util.Pair;
 import com.intellij.vcs.log.graph.api.LinearGraph;
 import com.intellij.vcs.log.graph.impl.permanent.GraphLayoutImpl;
@@ -17,6 +18,7 @@ import static com.intellij.vcs.log.graph.utils.LinearGraphUtils.getDownNodes;
 import static com.intellij.vcs.log.graph.utils.LinearGraphUtils.getUpNodes;
 
 class BekBranchCreator {
+  private final static Logger LOG = Logger.getInstance(BekBranchCreator.class);
   @NotNull private final LinearGraph myPermanentGraph;
   @NotNull private final GraphLayoutImpl myGraphLayout;
   @NotNull private final Flags myDoneNodes;
@@ -43,7 +45,7 @@ class BekBranchCreator {
   public List<Integer> createNextBranch(int headNode) {
     final List<Integer> nodeIndexes = new ArrayList<>();
 
-    assert !myDoneNodes.get(headNode);
+    LOG.assertTrue(!myDoneNodes.get(headNode));
     myDoneNodes.set(headNode, true);
     nodeIndexes.add(headNode);
 
diff --git a/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranchMerger.java b/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranchMerger.java
index 86faae968ec1..ec32850fb546 100644
--- a/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranchMerger.java
+++ b/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekBranchMerger.java
@@ -1,6 +1,7 @@
 // Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.vcs.log.graph.impl.facade.bek;
 
+import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.util.containers.ContainerUtil;
 import com.intellij.vcs.log.graph.utils.TimestampGetter;
 import org.jetbrains.annotations.NotNull;
@@ -9,6 +10,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 class BekBranchMerger {
+  private final static Logger LOG = Logger.getInstance(BekBranchMerger.class);
   @NotNull private final List<? extends BekBranch> myBekBranches;
   @NotNull private final BekEdgeRestrictions myEdgeRestrictions;
   @NotNull private final TimestampGetter myTimestampGetter;
@@ -41,7 +43,7 @@ class BekBranchMerger {
     List<Integer> prepareForInsertPart = bekBranch.getPrepareForInsertPart();
     if (prepareForInsertPart == null) return Long.MAX_VALUE;
 
-    assert !prepareForInsertPart.isEmpty();
+    LOG.assertTrue(!prepareForInsertPart.isEmpty());
     int nodeIndex = prepareForInsertPart.get(0);
     return myTimestampGetter.getTimestamp(nodeIndex);
   }
@@ -55,7 +57,7 @@ class BekBranchMerger {
     }
 
     List<Integer> prepareForInsertPart = selectBranch.getPrepareForInsertPart();
-    assert prepareForInsertPart != null;
+    LOG.assertTrue(prepareForInsertPart != null);
     for (int insertedNode : prepareForInsertPart) {
       myEdgeRestrictions.removeRestriction(insertedNode);
     }
diff --git a/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekSorter.java b/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekSorter.java
index eeac972f509f..b2154d60577f 100644
--- a/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekSorter.java
+++ b/platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/bek/BekSorter.java
@@ -1,6 +1,7 @@
 // Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.vcs.log.graph.impl.facade.bek;
 
+import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.util.Pair;
 import com.intellij.vcs.log.graph.api.LinearGraph;
 import com.intellij.vcs.log.graph.impl.permanent.GraphLayoutImpl;
@@ -12,6 +13,8 @@ import org.jetbrains.annotations.NotNull;
 import java.util.List;
 
 public final class BekSorter {
+  private final static Logger LOG = Logger.getInstance(BekSorter.class);
+
   @NotNull
   public static BekIntMap createBekMap(@NotNull LinearGraph permanentGraph,
                                        @NotNull GraphLayoutImpl graphLayout,
@@ -19,7 +22,7 @@ public final class BekSorter {
     BekSorter bekSorter = new BekSorter(permanentGraph, graphLayout, timestampGetter);
 
     List<Integer> result = bekSorter.getResult();
-    assert result.size() == permanentGraph.nodesCount();
+    LOG.assertTrue(result.size() == permanentGraph.nodesCount());
     return createBekIntMap(result);
   }