trouble creating UFS slise with gpart

[Andrey Groshev]

Hi, All!

I decided to use "gpart" for partitioning, instead of the standard 
fdisk, bsdlabel , which were used during initial installation freebsd.
On first slice is installed windows, and the second freebsd.
I can not remove windose, because for his computer owned by an 
organization in which I work, and for windose paid. :)
I want to make just one more slice with UFS.

#gpart show
=>       63  976773105  ada0  MBR  (466G)
          63   69561387     1  !7  (33G)
    69561450  125821080     2  freebsd  [active]  (60G)
   195382530  671083245     3  freebsd  (320G)
   866465775  110307393        - free -  (53G)

=>        0  125821080  ada0s2  BSD  (60G)
           0         16          - free -  (8.0K)
          16    2097152       1  freebsd-ufs  (1.0G)
     2097168    4194304       2  freebsd-swap  (2.0G)
     6291472    8388608       4  freebsd-ufs  (4.0G)
    14680080    8388608       5  freebsd-ufs  (4.0G)
    23068688  102752392       6  freebsd-ufs  (49G)

=>        0  671083245  ada0s3  BSD  (320G)
           0         16          - free -  (8.0K)
          16  671083229       1  freebsd-ufs  (320G)


Now since MBR already have, I just create another one with freebsd.
#gpart add -t freebsd ada0
ada0s4 added


I saw what happened ...
#gpart show
=>       63  976773105  ada0  MBR  (466G)
          63   69561387     1  !7  (33G)
    69561450  125821080     2  freebsd  [active]  (60G)
   195382530  671083245     3  freebsd  (320G)
   866465775  110307393     4  freebsd  (53G)

=>        0  125821080  ada0s2  BSD  (60G)
           0         16          - free -  (8.0K)
          16    2097152       1  freebsd-ufs  (1.0G)
     2097168    4194304       2  freebsd-swap  (2.0G)
     6291472    8388608       4  freebsd-ufs  (4.0G)
    14680080    8388608       5  freebsd-ufs  (4.0G)
    23068688  102752392       6  freebsd-ufs  (49G)

=>        0  671083245  ada0s3  BSD  (320G)
           0         16          - free -  (8.0K)
          16  671083229       1  freebsd-ufs  (320G)

=>        0  110307393  ada0s4  EBR  (53G)
           0  110307393          - free -  (53G)

Why did the resulting slice has a type of EBR and not BSD (as I asked)?
It's me doing something wrong or gpart considers himself very clever?