diff --git a/src/LyXVC.h b/src/LyXVC.h
index efe639aff9..df16efcd84 100644
--- a/src/LyXVC.h
+++ b/src/LyXVC.h
@@ -121,7 +121,18 @@ public:
 	/// Returns the version number.
 	std::string const versionString() const;
 
-	/// Returns the userid of the person who has locked the doc.
+	/**
+	 * Returns the userid of the person who has locked the doc.
+	 * FIXME This property is descendant from the original VCS
+	 * and used in RCS for user id or "unlocked" strings.
+	 * It would be problem to use this under SVN since getting
+	 * the locker would need connection to server any time we
+	 * load document. SVN currently (mis)uses this as a signal
+	 * for locking state, as we do not have API for vcstatus().
+	 * The RCS code for user id parsing is working but we don't display
+	 * it anywhere. One possibility is to provide proper vcstatus()
+	 * interface and kill the whole locker thing.
+	 */
 	std::string const & locker() const;
 
 private: