diff --git a/lib/msk144decodeframe.f90 b/lib/msk144decodeframe.f90
index aeb9bd891..f200d3ee5 100644
--- a/lib/msk144decodeframe.f90
+++ b/lib/msk144decodeframe.f90
@@ -14,7 +14,8 @@ subroutine msk144decodeframe(c,softbits,msgreceived,nsuccess,doosd)
   real pp(12)
   real softbits(144)
   real llr(128)
-  logical first,unpk77_success,doosd
+  logical first,unpk77_success
+  logical*1 doosd
   data first/.true./
   data s8/0,1,1,1,0,0,1,0/
   save first,cb,fs,pi,twopi,dt,s8,pp
@@ -95,8 +96,9 @@ subroutine msk144decodeframe(c,softbits,msgreceived,nsuccess,doosd)
   max_iterations=10
 !  call timer('bpdec128_90 ',0)
   apmask=0
+  dmin=0.0
   call bpdecode128_90(llr,apmask,max_iterations,decoded77,cw,nharderror,niterations)
-  if(doosd .and. nharderror .lt. 0) call osd128_90(llr,apmask,3,decoded77,cw,nharderror,dmin)
+!  if(doosd .and. nharderror .lt. 0) call osd128_90(llr,apmask,3,decoded77,cw,nharderror,dmin)
 !  call timer('bpdec128_90 ',1)
   if( nharderror .ge. 0 .and. nharderror .lt. 18 ) then
     nsuccess=1
@@ -106,6 +108,7 @@ subroutine msk144decodeframe(c,softbits,msgreceived,nsuccess,doosd)
         nsuccess=0 
     else 
         call unpack77(c77,1,msgreceived,unpk77_success)
+!if(unpk77_success) write(*,*) msgreceived,nharderror,dmin,nbadsync1,nbadsync2
         if(.not.unpk77_success) nsuccess=0
     endif
   endif
diff --git a/lib/msk144spd.f90 b/lib/msk144spd.f90
index 85758a1dd..c32d2c08e 100644
--- a/lib/msk144spd.f90
+++ b/lib/msk144spd.f90
@@ -31,7 +31,7 @@ subroutine msk144spd(cbig,n,ntol,nsuccess,msgreceived,fc,fret,tret,navg,ct,   &
   real tpat(NPATTERNS)
   real*8 dt, df, fs, pi, twopi
   logical first
-  logical doosd
+  logical*1 doosd
   data first/.true./
   data navpatterns/ &
        0,1,0, &
@@ -44,7 +44,9 @@ subroutine msk144spd(cbig,n,ntol,nsuccess,msgreceived,fc,fret,tret,navg,ct,   &
 
   save df,first,fs,pi,twopi,dt,tframe,rcw
 
+  doosd=.false.
   if( ntol .le. 50 ) doosd = .true.
+
   if(first) then
      nmatchedfilter=1
 ! define half-sine pulse and raised-cosine edge window
diff --git a/lib/mskrtd.f90 b/lib/mskrtd.f90
index 54bcf29e7..2fd535d6f 100644
--- a/lib/mskrtd.f90
+++ b/lib/mskrtd.f90
@@ -144,6 +144,7 @@ subroutine mskrtd(id2,nutc0,tsec,ntol,nrxfreq,ndepth,mycall,mygrid,hiscall,   &
   npat=NPATTERNS
   if( ndepth .eq. 1 ) npat=0
   if( ndepth .eq. 2 ) npat=2
+  doosd=.false.
   if( ntol .le. 50 ) doosd = .true.
   do iavg=1,npat
      iavmask=iavpatterns(1:8,iavg)