diff --git a/src/session_impl.cpp b/src/session_impl.cpp
index 9f706d8d8..fefa03303 100644
--- a/src/session_impl.cpp
+++ b/src/session_impl.cpp
@@ -3474,6 +3474,8 @@ namespace aux {
 #ifndef TORRENT_DISABLE_GEO_IP
 		if (m_asnum_db) GeoIP_delete(m_asnum_db);
 		if (m_country_db) GeoIP_delete(m_country_db);
+		m_asnum_db = 0;
+		m_country_db = 0;
 #endif
 #if defined(TORRENT_VERBOSE_LOGGING) || defined(TORRENT_LOGGING)
 		(*m_logger) << time_now_string() << " waiting for main thread\n";