diff --git a/winconf.pri b/winconf.pri
index af58f5b19..2fce6d5a1 100644
--- a/winconf.pri
+++ b/winconf.pri
@@ -26,6 +26,7 @@ DEFINES += _WIN32
 DEFINES += _WIN32_WINNT=0x0500
 DEFINES += __USE_W32_SOCKETS
 DEFINES += WITH_SHIPPED_GEOIP_H
+DEFINES += TORRENT_USE_WPATH
 
 CONFIG(debug, debug|release) {
   DEFINES += TORRENT_DEBUG