diff --git a/platform/vcs-log/impl/src/com/intellij/vcs/log/data/VcsLogRefresherImpl.java b/platform/vcs-log/impl/src/com/intellij/vcs/log/data/VcsLogRefresherImpl.java
index 2c533716a3e6..3631666b8be5 100644
--- a/platform/vcs-log/impl/src/com/intellij/vcs/log/data/VcsLogRefresherImpl.java
+++ b/platform/vcs-log/impl/src/com/intellij/vcs/log/data/VcsLogRefresherImpl.java
@@ -1,7 +1,8 @@
-// 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.vcs.log.data;
 
 import com.intellij.openapi.Disposable;
+import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.progress.ProcessCanceledException;
 import com.intellij.openapi.progress.ProgressIndicator;
@@ -254,7 +255,7 @@ public class VcsLogRefresherImpl implements VcsLogRefresher, Disposable {
             return VcsLogProperties.SUPPORTS_INCREMENTAL_REFRESH.getOrDefault(provider);
           });
 
-          smallDataPack = optimize && supportsIncrementalRefresh && SMALL_DATA_PACK_COMMITS_COUNT > 0
+          smallDataPack = optimize && supportsIncrementalRefresh && isSmallDataPackEnabled()
                           ? buildSmallDataPack() : DataPack.EMPTY;
 
           if (smallDataPack != DataPack.EMPTY) {
@@ -270,6 +271,10 @@ public class VcsLogRefresherImpl implements VcsLogRefresher, Disposable {
       }
     }
 
+    private static boolean isSmallDataPackEnabled() {
+      return SMALL_DATA_PACK_COMMITS_COUNT > 0 && !ApplicationManager.getApplication().isUnitTestMode();
+    }
+
     private @NotNull Collection<VirtualFile> getRootsToRefresh(@NotNull List<? extends RefreshRequest> requests) {
       Collection<VirtualFile> rootsToRefresh = new ArrayList<>();
       for (RefreshRequest request : requests) {