diff --git a/utils/CMakeLists.txt b/utils/CMakeLists.txt
index 25d44b73d..7565bdad9 100644
--- a/utils/CMakeLists.txt
+++ b/utils/CMakeLists.txt
@@ -80,7 +80,7 @@ target_link_libraries(copygb PRIVATE bacio::bacio w3emc::w3emc_d ip::ip_d)
 add_executable(grbindex grbindex.f)
 target_link_libraries(grbindex PRIVATE bacio::bacio w3emc::w3emc_4)
 
-add_executable(tocgrib makwmo.F90 mkfldsep.F90 tocgrib.F90)
+add_executable(tocgrib makwmo.F90 tocgrib.F90)
 target_link_libraries(tocgrib PRIVATE bacio::bacio w3emc::w3emc_4)
 
 if(ip_VERSION LESS 5.0)
diff --git a/utils/mkfldsep.F90 b/utils/mkfldsep.F90
deleted file mode 100644
index e0f5353ec..000000000
--- a/utils/mkfldsep.F90
+++ /dev/null
@@ -1,96 +0,0 @@
-!> @file
-!> @brief Makes TOC Flag Field Separator Block.
-!> @author Gilbert @date 2002-09-16
-
-!> Generates a TOC Flag Field Separator Block used to separate WMO
-!> Bulletins within a transmission file to be ingested in TOC's FTP
-!> Input Service, which can be used to disseminate WMO buletins (see
-!> http://weather.gov/tg/ftpingest.html).
-!>
-!> This routine can generate different flag field separator blocks
-!> depending on the value of variable iopt.
-!>
-!> Bulletin "Flag Field Separator" block - OPTION 1 (old)
-!>
-!> Bytes | Description
-!> ------|------------
-!> 1 - 4 | marker string (####)
-!> 5 - 7 | block length [018 fixed value]
-!> 8 - 13 | total length of bulletin in bytes [octets] (not including the flag field block)
-!> 14 - 17 | marker string (####)
-!> 18 | line Feed (ASCII "0A")
-!>
-!> Bulletin "Flag Field Separator" block - OPTION 1a (new)
-!>
-!> Bytes | Description
-!> ------|------------
-!> 1 - 4 | marker string (####)
-!> 5 - 7 | block length (nnn) - value always greater than 018
-!> 8 - 18 | total length of bulletin in bytes [octets] (not including the flag field block)
-!> 19 - nnn-5 | reserved for future use
-!> nnn-4 - nnn-1 | marker string (####)
-!> nnn | line Feed (ASCII "0A")
-!>
-!>   Bulletin "Flag Field Separator" block - OPTION 2 (limited)
-!>
-!> Bytes | Description
-!> ------|------------
-!> 1 - 4 | marker string (****)
-!> 5 - 14 | total length of bulletin in bytes [octets] (not including the flag field block)
-!> 15 - 18 | marker string (****)
-!> 19 | line Feed (ASCII "0A")
-!>
-!> @param[out] csep*(*) Character array containing the flag field separator.
-!> @param[in] iopt Flag Field Separator block option:
-!> - 1 Separator block for use with alphanumeric bulletins.
-!>   - if lenin <= 18 and lenbull <= 999999, OPTION 1 block will be generated.
-!>   - if lenin > 18 or lenbull > 999999, OPTION 1a block will be generated.
-!> - 2 Separator block for use with GRIB/BUFR bulletins.
-!> @param[in] lenin Desired length of the flag field separator
-!> block. ignored, if iopt=2.
-!> @param[in] lenbull Integer length of the bulletin (in bytes) that
-!> will follow this separator block.
-!> @param[out] lenout Integer length of the flag field separator block.
-!>
-!> @author Gilbert @date 2002-09-16
-subroutine mkfldsep(csep,iopt,lenin,lenbull,lenout)
-  !
-  character*(*),intent(out) :: csep
-  integer,intent(in) :: iopt,lenin,lenbull
-  integer,intent(out) :: lenout
-  !
-  character(len=4),parameter :: cstar='****',clb='####'
-  !
-  if (iopt.eq.1) then
-     if ( lenin .le. 18 .and. lenbull .le. 999999 ) then
-        ! Create OPTION 1 separator block
-        csep(1:4)=clb
-        csep(5:7)='018'
-        write(csep(8:13),fmt='(I6.6)') lenbull
-        csep(14:17)=clb
-        csep(18:18)=char(10)
-        lenout=18
-     else                         ! Create OPTION 1a separator block
-        nnn=lenin
-        if ( nnn.lt.23 ) nnn=23
-        csep(1:4)=clb
-        write(csep(5:7),fmt='(I3.3)') nnn
-        write(csep(8:18),fmt='(I11.11)') lenbull
-        csep(19:nnn-5)='0'
-        csep(nnn-4:nnn-1)=clb
-        csep(nnn:nnn)=char(10)
-        lenout=nnn
-     endif
-  elseif (iopt.eq.2) then         !  Create OPTION 2 separator block
-     csep(1:4)=cstar
-     write(csep(5:14),fmt='(I10.10)') lenbull
-     csep(15:18)=cstar
-     csep(19:19)=char(10)
-     lenout=19
-  else
-     print *,"mkfldsep: Option ",iopt," not recognized."
-     csep(1:lenin)=' '
-  endif
-  !
-  return
-end subroutine mkfldsep
diff --git a/utils/tocgrib.F90 b/utils/tocgrib.F90
index 937f598e2..0f649d7f4 100644
--- a/utils/tocgrib.F90
+++ b/utils/tocgrib.F90
@@ -242,3 +242,96 @@ PROGRAM tocgrib
 
   STOP
 END PROGRAM tocgrib
+
+!> Generates a TOC Flag Field Separator Block used to separate WMO
+!> Bulletins within a transmission file to be ingested in TOC's FTP
+!> Input Service, which can be used to disseminate WMO buletins (see
+!> http://weather.gov/tg/ftpingest.html).
+!>
+!> This routine can generate different flag field separator blocks
+!> depending on the value of variable iopt.
+!>
+!> Bulletin "Flag Field Separator" block - OPTION 1 (old)
+!>
+!> Bytes | Description
+!> ------|------------
+!> 1 - 4 | marker string (####)
+!> 5 - 7 | block length [018 fixed value]
+!> 8 - 13 | total length of bulletin in bytes [octets] (not including the flag field block)
+!> 14 - 17 | marker string (####)
+!> 18 | line Feed (ASCII "0A")
+!>
+!> Bulletin "Flag Field Separator" block - OPTION 1a (new)
+!>
+!> Bytes | Description
+!> ------|------------
+!> 1 - 4 | marker string (####)
+!> 5 - 7 | block length (nnn) - value always greater than 018
+!> 8 - 18 | total length of bulletin in bytes [octets] (not including the flag field block)
+!> 19 - nnn-5 | reserved for future use
+!> nnn-4 - nnn-1 | marker string (####)
+!> nnn | line Feed (ASCII "0A")
+!>
+!>   Bulletin "Flag Field Separator" block - OPTION 2 (limited)
+!>
+!> Bytes | Description
+!> ------|------------
+!> 1 - 4 | marker string (****)
+!> 5 - 14 | total length of bulletin in bytes [octets] (not including the flag field block)
+!> 15 - 18 | marker string (****)
+!> 19 | line Feed (ASCII "0A")
+!>
+!> @param[out] csep*(*) Character array containing the flag field separator.
+!> @param[in] iopt Flag Field Separator block option:
+!> - 1 Separator block for use with alphanumeric bulletins.
+!>   - if lenin <= 18 and lenbull <= 999999, OPTION 1 block will be generated.
+!>   - if lenin > 18 or lenbull > 999999, OPTION 1a block will be generated.
+!> - 2 Separator block for use with GRIB/BUFR bulletins.
+!> @param[in] lenin Desired length of the flag field separator
+!> block. ignored, if iopt=2.
+!> @param[in] lenbull Integer length of the bulletin (in bytes) that
+!> will follow this separator block.
+!> @param[out] lenout Integer length of the flag field separator block.
+!>
+!> @author Gilbert @date 2002-09-16
+subroutine mkfldsep(csep,iopt,lenin,lenbull,lenout)
+  !
+  character*(*),intent(out) :: csep
+  integer,intent(in) :: iopt,lenin,lenbull
+  integer,intent(out) :: lenout
+  !
+  character(len=4),parameter :: cstar='****',clb='####'
+  !
+  if (iopt.eq.1) then
+     if ( lenin .le. 18 .and. lenbull .le. 999999 ) then
+        ! Create OPTION 1 separator block
+        csep(1:4)=clb
+        csep(5:7)='018'
+        write(csep(8:13),fmt='(I6.6)') lenbull
+        csep(14:17)=clb
+        csep(18:18)=char(10)
+        lenout=18
+     else                         ! Create OPTION 1a separator block
+        nnn=lenin
+        if ( nnn.lt.23 ) nnn=23
+        csep(1:4)=clb
+        write(csep(5:7),fmt='(I3.3)') nnn
+        write(csep(8:18),fmt='(I11.11)') lenbull
+        csep(19:nnn-5)='0'
+        csep(nnn-4:nnn-1)=clb
+        csep(nnn:nnn)=char(10)
+        lenout=nnn
+     endif
+  elseif (iopt.eq.2) then         !  Create OPTION 2 separator block
+     csep(1:4)=cstar
+     write(csep(5:14),fmt='(I10.10)') lenbull
+     csep(15:18)=cstar
+     csep(19:19)=char(10)
+     lenout=19
+  else
+     print *,"mkfldsep: Option ",iopt," not recognized."
+     csep(1:lenin)=' '
+  endif
+  !
+  return
+end subroutine mkfldsep
\ No newline at end of file