diff --git a/libisoburn/trunk/xorriso/xorriso.c b/libisoburn/trunk/xorriso/xorriso.c
index 323b7d68..72d41d76 100644
--- a/libisoburn/trunk/xorriso/xorriso.c
+++ b/libisoburn/trunk/xorriso/xorriso.c
@@ -6788,7 +6788,7 @@ not_enough_args:;
    }
  }
  if(do_print_size) {
-   ret= Xorriso_option_print_size(xorriso, 0);
+   ret= Xorriso_option_print_size(xorriso, 1);
    if(ret<=0)
      goto ex;
  }
@@ -9072,10 +9072,12 @@ int Xorriso_option_print(struct XorrisO *xorriso, char *text, int flag)
 }
 
 
-/* Option -print-size */
+/* Option -print-size
+   @param flag bit0= report in mkisofs compatible form on real stdout
+*/
 int Xorriso_option_print_size(struct XorrisO *xorriso, int flag)
 {
- int ret;
+ int ret, fd;
 
  if(!xorriso->volset_change_pending) {
    sprintf(xorriso->info_text,"-print-size: No image modifications pending");
@@ -9090,8 +9092,16 @@ int Xorriso_option_print_size(struct XorrisO *xorriso, int flag)
    Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
    return(0);
  }
- sprintf(xorriso->result_line,"Image size   : %ds\n", ret);
- Xorriso_result(xorriso,0);
+ if(flag&1) {
+   sprintf(xorriso->result_line,"%d\n", ret);
+   fd= xorriso->dev_fd_1;
+   if(fd<0)
+     fd= 1;
+   write(fd, xorriso->result_line, strlen(xorriso->result_line));
+ } else {
+   sprintf(xorriso->result_line,"Image size   : %ds\n", ret);
+   Xorriso_result(xorriso,0);
+ }
  return(1);
 }
 
diff --git a/libisoburn/trunk/xorriso/xorriso.h b/libisoburn/trunk/xorriso/xorriso.h
index f4119e96..6965b254 100644
--- a/libisoburn/trunk/xorriso/xorriso.h
+++ b/libisoburn/trunk/xorriso/xorriso.h
@@ -353,7 +353,9 @@ int Xorriso_option_pkt_output(struct XorrisO *xorriso, char *mode, int flag);
 /* Option -print */
 int Xorriso_option_print(struct XorrisO *xorriso, char *text, int flag);
 
-/* Option -print-size */
+/* Option -print-size
+   @param flag bit0= report in mkisofs compatible form on real stdout
+*/
 int Xorriso_option_print_size(struct XorrisO *xorriso, int flag);
 
 /* Option -prog */
diff --git a/libisoburn/trunk/xorriso/xorriso_timestamp.h b/libisoburn/trunk/xorriso/xorriso_timestamp.h
index 335c256c..0d11f0ac 100644
--- a/libisoburn/trunk/xorriso/xorriso_timestamp.h
+++ b/libisoburn/trunk/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2008.02.23.102903"
+#define Xorriso_timestamP "2008.02.23.113902"