--- poldek-0.32.2/vfile/vfff/ftp.c~	2016-01-30 14:05:57.000000000 +0000
+++ poldek-0.32.2/vfile/vfff/ftp.c	2019-10-02 08:50:20.832444438 +0000
@@ -654,6 +654,9 @@
         tm.tm_year -= 1900;
         tm.tm_mon -=  1;
         ts = mktime(&tm);
+        /* We can't do much if time can't be represented */
+        if (ts < 0)
+            return 0;
     }
     return ts;
 }