diff --git a/pokerth_game.pro b/pokerth_game.pro
index f11eebbe..0c41f17d 100644
--- a/pokerth_game.pro
+++ b/pokerth_game.pro
@@ -339,7 +339,7 @@ win32 {
 		LIBS += -lboost_system-mt
 	}
 	win32-g++ {
-		LIBS += -ltasn1
+		!pkth_win64:LIBS += -ltasn1
 		LIBS += -lboost_thread-mgw45-mt-1_44.dll
 		LIBS += -lboost_filesystem-mgw45-mt-1_44.dll
 		LIBS += -lboost_regex-mgw45-mt-1_44