diff --git a/docs/manual.html b/docs/manual.html
index 20b7422a3..29668f8f2 100644
--- a/docs/manual.html
+++ b/docs/manual.html
@@ -3798,6 +3798,20 @@ struct file_error_alert: torrent_alert
 <p>This alert is generated each time a tracker announce is sent (or attempted to be sent).
 There are no extra data members in this alert. The url can be found in the base class
 however.</p>
+<pre class="literal-block">
+struct tracker_announce_alert: tracker_alert
+{
+        // ...
+        int event;
+};
+</pre>
+<p>Event specifies what event was sent to the tracker. It is defined as:</p>
+<ol class="arabic simple" start="0">
+<li>None</li>
+<li>Completed</li>
+<li>Started</li>
+<li>Stopped</li>
+</ol>
 </div>
 <div class="section">
 <h2><a id="tracker-error-alert" name="tracker-error-alert">tracker_error_alert</a></h2>
diff --git a/docs/manual.rst b/docs/manual.rst
index df4cfecbb..fbc2ecb49 100644
--- a/docs/manual.rst
+++ b/docs/manual.rst
@@ -3901,6 +3901,21 @@ This alert is generated each time a tracker announce is sent (or attempted to be
 There are no extra data members in this alert. The url can be found in the base class
 however.
 
+::
+
+	struct tracker_announce_alert: tracker_alert
+	{
+		// ...
+		int event;
+	};
+
+Event specifies what event was sent to the tracker. It is defined as:
+
+0. None
+1. Completed
+2. Started
+3. Stopped
+
 
 tracker_error_alert
 -------------------
diff --git a/include/libtorrent/alert_types.hpp b/include/libtorrent/alert_types.hpp
index a1c556d82..61a1d6c12 100644
--- a/include/libtorrent/alert_types.hpp
+++ b/include/libtorrent/alert_types.hpp
@@ -324,16 +324,20 @@ namespace libtorrent
 	struct TORRENT_EXPORT tracker_announce_alert: tracker_alert
 	{
 		tracker_announce_alert(torrent_handle const& h
-			, std::string const& url)
+			, std::string const& url, int event_)
 			: tracker_alert(h, url)
+			, event(event_)
 		{}
+
+		int event;
 	
 		virtual std::auto_ptr<alert> clone() const
 		{ return std::auto_ptr<alert>(new tracker_announce_alert(*this)); }
 		virtual char const* what() const { return "tracker announce sent"; }
 		virtual std::string message() const
 		{
-			return tracker_alert::message() + " sending announce";
+			const static char* event_str[] = {"none", "completed", "started", "stopped"};
+			return tracker_alert::message() + " sending announce (" + event_str[event] + ")";
 		}
 	};
 	
diff --git a/src/session_impl.cpp b/src/session_impl.cpp
index 4b5669a5c..789340cd9 100644
--- a/src/session_impl.cpp
+++ b/src/session_impl.cpp
@@ -1105,7 +1105,7 @@ namespace aux {
 				if (m_alerts.should_post<tracker_announce_alert>())
 				{
 					m_alerts.post_alert(
-						tracker_announce_alert(t.get_handle(), req.url));
+						tracker_announce_alert(t.get_handle(), req.url, req.event));
 				}
 			}
 
@@ -1863,7 +1863,7 @@ namespace aux {
 				if (m_alerts.should_post<tracker_announce_alert>())
 				{
 					m_alerts.post_alert(
-						tracker_announce_alert(t.get_handle(), req.url));
+						tracker_announce_alert(t.get_handle(), req.url, req.event));
 				}
 			}
 #ifndef NDEBUG