--- wget-1.13.4/src/http.c.orig	2011-09-07 10:58:01.000000000 +0000
+++ wget-1.13.4/src/http.c	2012-03-19 13:58:29.000000000 +0000
@@ -3517,7 +3517,7 @@
   char *last_period_in_local_filename = strrchr (hs->local_file, '.');
   char shortext[8];
   int len = strlen (ext);
-  if (len == 5)
+  if (len == 4)
     {
       strncpy (shortext, ext, len - 1);
       shortext[len - 1] = '\0';