diff --git a/lib/ft8/ft8b.f90 b/lib/ft8/ft8b.f90
index b4b8c737b..246541461 100644
--- a/lib/ft8/ft8b.f90
+++ b/lib/ft8/ft8b.f90
@@ -403,8 +403,8 @@ subroutine ft8b(dd0,newdat,nQSOProgress,nfqso,nftx,ndepth,nzhsym,lapon,     &
      dmin=0.0
      norder=2
      maxosd=2
-     if(ndepth.eq.2) maxosd=0
-     if(ndepth.eq.1) maxosd=-1
+     if(ndepth.eq.1) maxosd=-1  ! BP only
+     if(ndepth.eq.2) maxosd=0   ! uncoupled BP+OSD
      if(ndepth.eq.3 .and.         &
         (abs(nfqso-f1).le.napwid .or. abs(nftx-f1).le.napwid .or. ncontest.eq.7)) then
         maxosd=2