diff --git a/src/kademlia/dht_tracker.cpp b/src/kademlia/dht_tracker.cpp
index 356b5b211..9d659fa9f 100644
--- a/src/kademlia/dht_tracker.cpp
+++ b/src/kademlia/dht_tracker.cpp
@@ -648,8 +648,10 @@ namespace {
 	{
 		TORRENT_ASSERT(m_nodes.find(s) != m_nodes.end());
 
+		static_assert(LIBTORRENT_VERSION_MINOR < 16, "version number not supported by DHT");
+		static_assert(LIBTORRENT_VERSION_TINY < 16, "version number not supported by DHT");
 		static char const version_str[] = {'L', 'T'
-			, LIBTORRENT_VERSION_MAJOR, LIBTORRENT_VERSION_MINOR};
+			, LIBTORRENT_VERSION_MAJOR, (LIBTORRENT_VERSION_MINOR << 4) | LIBTORRENT_VERSION_TINY};
 		e["v"] = std::string(version_str, version_str + 4);
 
 		m_send_buf.clear();