diff --git a/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/editor/VcsLogEditor.kt b/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/editor/VcsLogEditor.kt
index 5ccf5d749b2f..1f0e58ca7952 100644
--- a/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/editor/VcsLogEditor.kt
+++ b/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/editor/VcsLogEditor.kt
@@ -90,8 +90,10 @@ class VcsLogEditorProvider : FileEditorProvider, DumbAware {
 }
 
 class VcsLogEditorTabTitleProvider : EditorTabTitleProvider {
-  override fun getEditorTabTitle(project: Project, file: VirtualFile): String? =
-    file.getUserData(VCS_LOG_FILE_DISPLAY_NAME_GENERATOR)
-      ?.let { displayNameGenerator -> (file as? VcsLogFile)?.logUis?.run(displayNameGenerator) }
-    ?: file.name
+  override fun getEditorTabTitle(project: Project, file: VirtualFile): String? {
+    if (file !is VcsLogFile) return null
+    return file.getUserData(VCS_LOG_FILE_DISPLAY_NAME_GENERATOR)
+             ?.let { displayNameGenerator -> (file as? VcsLogFile)?.logUis?.run(displayNameGenerator) }
+           ?: file.name
+  }
 }
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