diff --git a/platform/vcs-log/impl/src/com/intellij/vcs/log/history/FileHistoryUi.java b/platform/vcs-log/impl/src/com/intellij/vcs/log/history/FileHistoryUi.java
index 821eef96ebcd..24713d5f46dd 100644
--- a/platform/vcs-log/impl/src/com/intellij/vcs/log/history/FileHistoryUi.java
+++ b/platform/vcs-log/impl/src/com/intellij/vcs/log/history/FileHistoryUi.java
@@ -5,7 +5,6 @@ import com.google.common.util.concurrent.SettableFuture;
 import com.intellij.openapi.util.Condition;
 import com.intellij.openapi.util.Conditions;
 import com.intellij.openapi.util.EmptyRunnable;
-import com.intellij.openapi.util.registry.Registry;
 import com.intellij.openapi.vcs.FilePath;
 import com.intellij.openapi.vcs.history.VcsFileRevision;
 import com.intellij.openapi.vfs.VirtualFile;
@@ -80,12 +79,10 @@ public class FileHistoryUi extends AbstractVcsLogUi {
       }
     };
 
-    boolean isDiffPreviewAsEditor = Registry.is("vcs.log.show.diff.preview.as.editor.tab");
-
     myFilterUi = new FileHistoryFilterUi(path, revision, root, uiProperties);
-    myFileHistoryPanel = new FileHistoryPanel(this, myFileHistoryModel, logData, path, !isDiffPreviewAsEditor);
+    myFileHistoryPanel = new FileHistoryPanel(this, myFileHistoryModel, logData, path, !VcsLogUiUtil.isDiffPreviewInEditor());
 
-    if (isDiffPreviewAsEditor) {
+    if (VcsLogUiUtil.isDiffPreviewInEditor()) {
       new FileHistoryEditorDiffPreview(logData.getProject(), myUiProperties, myFileHistoryPanel);
     }
 
diff --git a/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/VcsLogUiImpl.java b/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/VcsLogUiImpl.java
index ffef63aa03c2..e4099daf0b11 100644
--- a/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/VcsLogUiImpl.java
+++ b/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/VcsLogUiImpl.java
@@ -5,7 +5,6 @@ import com.google.common.util.concurrent.SettableFuture;
 import com.intellij.openapi.Disposable;
 import com.intellij.openapi.ui.MessageType;
 import com.intellij.openapi.util.NamedRunnable;
-import com.intellij.openapi.util.registry.Registry;
 import com.intellij.openapi.vcs.ui.VcsBalloonProblemNotifier;
 import com.intellij.ui.navigation.History;
 import com.intellij.util.Consumer;
@@ -74,7 +73,7 @@ public class VcsLogUiImpl extends AbstractVcsLogUi implements MainVcsLogUi {
   @NotNull
   protected MainFrame createMainFrame(@NotNull VcsLogData logData,
                                       @NotNull MainVcsLogUiProperties uiProperties, @NotNull VcsLogFilterUiEx filterUi) {
-    boolean isDiffPreviewAsEditor = Registry.is("vcs.log.show.diff.preview.as.editor.tab");
+    boolean isDiffPreviewAsEditor = VcsLogUiUtil.isDiffPreviewInEditor();
     MainFrame mainFrame = new MainFrame(logData, this, uiProperties, filterUi, !isDiffPreviewAsEditor);
     if (isDiffPreviewAsEditor) {
       new VcsLogEditorDiffPreview(myProject, myUiProperties, mainFrame);
diff --git a/platform/vcs-log/impl/src/com/intellij/vcs/log/util/VcsLogUiUtil.java b/platform/vcs-log/impl/src/com/intellij/vcs/log/util/VcsLogUiUtil.java
index 7605921c12cd..e66aaa95ad32 100644
--- a/platform/vcs-log/impl/src/com/intellij/vcs/log/util/VcsLogUiUtil.java
+++ b/platform/vcs-log/impl/src/com/intellij/vcs/log/util/VcsLogUiUtil.java
@@ -11,6 +11,7 @@ import com.intellij.openapi.progress.util.ProgressWindow;
 import com.intellij.openapi.ui.popup.Balloon;
 import com.intellij.openapi.util.ActionCallback;
 import com.intellij.openapi.util.Disposer;
+import com.intellij.openapi.util.registry.Registry;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.ui.*;
 import com.intellij.ui.components.panels.Wrapper;
@@ -173,6 +174,10 @@ public class VcsLogUiUtil {
     appendActionToEmptyText(emptyText, VcsLogBundle.message("vcs.log.action.reset.filters"), () -> filterUi.setFilter(null));
   }
 
+  public static boolean isDiffPreviewInEditor() {
+    return Registry.is("vcs.log.show.diff.preview.as.editor.tab");
+  }
+
   private static class VcsLogPlaceNavigator implements Place.Navigator {
     @NonNls private static final String PLACE_KEY = "Vcs.Log.Ui.History.PlaceKey";
     @NotNull private final VcsLogUiEx myUi;