diff --git a/Configuration.hpp b/Configuration.hpp
index 128ec570b..3f5bc1a50 100644
--- a/Configuration.hpp
+++ b/Configuration.hpp
@@ -134,8 +134,6 @@ public:
   bool twoPass() const;
   bool bFox() const;
   bool bHound() const;
-  bool bGenerate77() const;
-  bool bDecode77() const;
   bool x2ToneSpacing() const;
   bool x4ToneSpacing() const;
   bool MyDx() const;
diff --git a/commons.h b/commons.h
index 926cbc848..7c202d26e 100644
--- a/commons.h
+++ b/commons.h
@@ -44,7 +44,6 @@ extern struct dec_data {
     bool lft8apon;
     bool lapcqonly;
     bool ljt65apon;
-    bool ldecode77;
     int napwid;
     int ntxmode;
     int nmode;
diff --git a/lib/decoder.f90 b/lib/decoder.f90
index 064fc907e..e1fb40436 100644
--- a/lib/decoder.f90
+++ b/lib/decoder.f90
@@ -100,8 +100,7 @@ subroutine multimode_decoder(ss,id2,params,nfsample)
           params%nftx,newdat,params%nutc,params%nfa,params%nfb,              &
           params%ndepth,ncontest,logical(params%nagain),                     &
           logical(params%lft8apon),logical(params%lapcqonly),                &
-          logical(params%ldecode77),params%napwid,                           &
-          mycall,hiscall,hisgrid)
+          params%napwid,mycall,hiscall,hisgrid)
      call timer('decft8  ',1)
      if(nfox.gt.0) then
         n30min=minval(n30fox(1:nfox))
diff --git a/lib/ft8/sync8.f90 b/lib/ft8/sync8.f90
index 50817a93c..f68e0a9c8 100644
--- a/lib/ft8/sync8.f90
+++ b/lib/ft8/sync8.f90
@@ -1,11 +1,10 @@
-subroutine sync8(dd,nfa,nfb,syncmin,nfqso,ldecode77,maxcand,s,candidate,   &
+subroutine sync8(dd,nfa,nfb,syncmin,nfqso,maxcand,s,candidate,   &
      ncand,sbase)
 
   include 'ft8_params.f90'
 ! Search over +/- 2.5s relative to 0.5s TX start time. 
   parameter (JZ=62)                        
   complex cx(0:NH1)
-  logical ldecode77
   real s(NH1,NHSYM)
   real savg(NH1)
   real sbase(NH1)
diff --git a/lib/ft8_decode.f90 b/lib/ft8_decode.f90
index 4d2a7152d..511252c42 100644
--- a/lib/ft8_decode.f90
+++ b/lib/ft8_decode.f90
@@ -33,7 +33,7 @@ module ft8_decode
 contains
 
   subroutine decode(this,callback,iwave,nQSOProgress,nfqso,nftx,newdat,  &
-       nutc,nfa,nfb,ndepth,ncontest,nagain,lft8apon,lapcqonly,ldecode77, &
+       nutc,nfa,nfb,ndepth,ncontest,nagain,lft8apon,lapcqonly, &
        napwid,mycall12,hiscall12,hisgrid6)
 !    use wavhdr
     use timer_module, only: timer
@@ -47,7 +47,7 @@ contains
     real sbase(NH1)
     real candidate(3,MAXCAND)
     real dd(15*12000)
-    logical, intent(in) :: lft8apon,lapcqonly,ldecode77,nagain
+    logical, intent(in) :: lft8apon,lapcqonly,nagain
     logical newdat,lsubtract,ldupe
     character*12 mycall12,hiscall12,mycall12_0
     character*6 hisgrid6
@@ -103,7 +103,7 @@ contains
       endif 
       call timer('sync8   ',0)
       maxc=MAXCAND
-      call sync8(dd,ifa,ifb,syncmin,nfqso,ldecode77,maxc,s,candidate,   &
+      call sync8(dd,ifa,ifb,syncmin,nfqso,maxc,s,candidate,   &
            ncand,sbase)
       call timer('sync8   ',1)
       do icand=1,ncand
diff --git a/lib/jt9.f90 b/lib/jt9.f90
index bc445fd38..ff548b46e 100644
--- a/lib/jt9.f90
+++ b/lib/jt9.f90
@@ -263,7 +263,6 @@ program jt9
      shared_data%params%ndepth=ndepth
      shared_data%params%lft8apon=.true.
      shared_data%params%ljt65apon=.true.
-     shared_data%params%ldecode77=.false.
      shared_data%params%napwid=75
      shared_data%params%dttol=3.
 
diff --git a/lib/jt9com.f90 b/lib/jt9com.f90
index 4ce7b6ea6..c595582d6 100644
--- a/lib/jt9com.f90
+++ b/lib/jt9com.f90
@@ -26,7 +26,6 @@
      logical(c_bool) :: lft8apon 
      logical(c_bool) :: lapcqonly
      logical(c_bool) :: ljt65apon 
-     logical(c_bool) :: ldecode77 
      integer(c_int) :: napwid
      integer(c_int) :: ntxmode
      integer(c_int) :: nmode
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 388c86a1d..bd23b3d07 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -2770,7 +2770,6 @@ void MainWindow::decode()                                       //decode()
   dec_data.params.nexp_decode = static_cast<int> (m_config.special_op_id());
   if(m_config.single_decode()) dec_data.params.nexp_decode += 32;
   if(m_config.enable_VHF_features()) dec_data.params.nexp_decode += 64;
-  dec_data.params.ldecode77 = true;
 
   strncpy(dec_data.params.datetime, m_dateTime.toLatin1(), 20);
   strncpy(dec_data.params.mycall, (m_config.my_callsign()+"            ").toLatin1(),12);