Index: m_option.c
===================================================================
--- m_option.c	(revision 18677)
+++ m_option.c	(working copy)
@@ -143,6 +143,8 @@
   if (param == NULL)
     return M_OPT_MISSING_PARAM;
 
+  tmp_int = strtol(param, &endptr, 10);
+  if (*endptr)
   tmp_int = strtol(param, &endptr, 0);
   if (*endptr) {
     mp_msg(MSGT_CFGPARSER, MSGL_ERR, "The %s option must be an integer: %s\n",name, param);