char filename2[PATH_MAX];
snprintf(filename, sizeof(filename), "%s" SLASH "tinc-up.invitation", confbase);
+
+#ifdef HAVE_MINGW
+ snprintf(filename2, sizeof(filename2), "%s" SLASH "tinc-up.bat", confbase);
+#else
snprintf(filename2, sizeof(filename2), "%s" SLASH "tinc-up", confbase);
+#endif
if(valid_tinc_up) {
if(tty) {