diff --git a/src/time.c b/src/time.c
index 9effca4..41249f0 100644
--- a/src/time.c
+++ b/src/time.c
@@ -51,7 +51,7 @@ time_get_weekly_seed(void)
 {
 	time_t now = time(NULL);
 
-#ifdef __MINGW32__
+#ifdef __MINGW32__ || __MINGW64__
 	struct tm *tm;
 	tm = gmtime(&now);
 	time_t lastMonday = get_last_monday(now, tm);