diff --git a/src/thread/Thread.cxx b/src/thread/Thread.cxx
index d1f18522f..80d72caed 100644
--- a/src/thread/Thread.cxx
+++ b/src/thread/Thread.cxx
@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2017 The Music Player Daemon Project
+ * Copyright 2003-2018 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/src/thread/Thread.hxx b/src/thread/Thread.hxx
index 7f724a627..c0d35a91c 100644
--- a/src/thread/Thread.hxx
+++ b/src/thread/Thread.hxx
@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2017 The Music Player Daemon Project
+ * Copyright 2003-2018 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -94,7 +94,13 @@ public:
 	}
 #endif
 
+	/**
+	 * Start the thread.
+	 *
+	 * Throws on error.
+	 */
 	void Start();
+
 	void Join() noexcept;
 
 private: