diff --git a/localization.c b/localization.c
index 6871a49..bb90576 100644
--- a/localization.c
+++ b/localization.c
@@ -189,7 +189,7 @@ LocalizedTime(const time_t t, LPTSTR buf, size_t size)
     /* Convert Unix timestamp to Win32 SYSTEMTIME */
     FILETIME lft;
     SYSTEMTIME st;
-    LONGLONG tmp = Int32x32To64(t, 10000000) + 116444736000000000;
+    LONGLONG tmp = (t * 10000000LL) + 116444736000000000LL;
     FILETIME ft = { .dwLowDateTime = (DWORD) tmp, .dwHighDateTime = tmp >> 32};
     FileTimeToLocalFileTime(&ft, &lft);
     FileTimeToSystemTime(&lft, &st);