diff --git a/src/http_tracker_connection.cpp b/src/http_tracker_connection.cpp
index db28560f7..3a8a2e2f4 100755
--- a/src/http_tracker_connection.cpp
+++ b/src/http_tracker_connection.cpp
@@ -375,7 +375,7 @@ namespace libtorrent
 		}
 #endif
 
-		tcp::resolver::query q(*connect_to_host, 0);
+		tcp::resolver::query q(*connect_to_host, "0");
 		m_name_lookup.async_resolve(q
 			, boost::bind(&http_tracker_connection::name_lookup, self(), _1, _2));
 		set_timeout(m_settings.tracker_completion_timeout
diff --git a/src/torrent.cpp b/src/torrent.cpp
index 9bc90bd72..8df4b00e4 100755
--- a/src/torrent.cpp
+++ b/src/torrent.cpp
@@ -955,7 +955,7 @@ namespace libtorrent
 			= parse_url_components(url);
 
 		m_resolving_web_seeds.insert(url);
-		tcp::resolver::query q(hostname, 0);
+		tcp::resolver::query q(hostname, "0");
 		
 		m_host_resolver.async_resolve(q, bind(&torrent::on_name_lookup
 			, shared_from_this(), _1, _2, port, url));
diff --git a/src/udp_tracker_connection.cpp b/src/udp_tracker_connection.cpp
index 0ca24ae08..df7cee3a1 100755
--- a/src/udp_tracker_connection.cpp
+++ b/src/udp_tracker_connection.cpp
@@ -90,7 +90,7 @@ namespace libtorrent
 		, m_attempts(0)
 	{
 		m_socket.reset(new datagram_socket(d));
-		tcp::resolver::query q(hostname, 0);
+		tcp::resolver::query q(hostname, "0");
 		m_name_lookup.async_resolve(q
 			, boost::bind(&udp_tracker_connection::name_lookup, self(), _1, _2));
 		set_timeout(m_settings.tracker_completion_timeout