diff --git a/platform/vcs-impl/src/com/intellij/openapi/vcs/history/VcsHistoryUtil.java b/platform/vcs-impl/src/com/intellij/openapi/vcs/history/VcsHistoryUtil.java
index e5fb8b2f6b09..ba9cab56309d 100644
--- a/platform/vcs-impl/src/com/intellij/openapi/vcs/history/VcsHistoryUtil.java
+++ b/platform/vcs-impl/src/com/intellij/openapi/vcs/history/VcsHistoryUtil.java
@@ -96,7 +96,13 @@ public class VcsHistoryUtil {
     FilePath path1 = getRevisionPath(revision1);
     FilePath path2 = getRevisionPath(revision2);
 
-    String title = DiffRequestFactoryImpl.getTitle(path1, path2, " -> ");
+    String title;
+    if (path1 != null && path2 != null) {
+      title = DiffRequestFactoryImpl.getTitle(path1, path2, " -> ");
+    }
+    else {
+      title = DiffRequestFactoryImpl.getContentTitle(path);
+    }
 
     DiffContent diffContent1 = createContent(project, content1, revision1, path);
     DiffContent diffContent2 = createContent(project, content2, revision2, path);