diff --git a/lib/genmsk144.f90 b/lib/genmsk144.f90
index 6b4b844b7..4eaa9e6f7 100644
--- a/lib/genmsk144.f90
+++ b/lib/genmsk144.f90
@@ -91,7 +91,7 @@ subroutine genmsk144(msg0,ichk,msgsent,i4tone,itype,pchk_file,ldpc_msg,   &
 
      if(message(1:1).eq.'<') then
         call genmsk40(message,msgsent,ichk,i4tone,itype,pchk_file,      &
-             fname1,fname2)
+             fname1,fname2,encodeExeFile)
         if(itype.lt.0) go to 999
         i4tone(41)=-40
         go to 999
diff --git a/lib/genmsk40.f90 b/lib/genmsk40.f90
index d04eb454e..75f3b6392 100644
--- a/lib/genmsk40.f90
+++ b/lib/genmsk40.f90
@@ -1,10 +1,11 @@
-subroutine genmsk40(msg,msgsent,ichk,itone,itype,pchk_file,fname1,fname2)
+subroutine genmsk40(msg,msgsent,ichk,itone,itype,pchk_file,fname1,fname2,encodeExeFile)
 
   use hashing
   character*22 msg,msgsent,hashmsg
   character*32 cwstring
   character*2  cwstrbit
   character*4 crpt,rpt(0:15)
+  character*512 encodeExeFile
   character*512 pchk_file,gen_file
   character*512 pchk_file40,gen_file40
   character*120 fname1,fname2
@@ -57,7 +58,7 @@ subroutine genmsk40(msg,msgsent,ichk,itone,itype,pchk_file,fname1,fname2)
   write(24,1010) message
 1010 format(16i1)
   close(24)
-  cmnd='encode "'//trim(pchk_file40)//'" "'//trim(gen_file40)//'" "'        &
+  cmnd=trim(encodeExeFile)//' "'//trim(pchk_file40)//'" "'//trim(gen_file40)//'" "'        &
        //trim(fname1)//'" "'//trim(fname2)//'"'
   call system(cmnd)
   open(24,file=fname2,status='old')
diff --git a/lib/msk144sim.f90 b/lib/msk144sim.f90
index bcae4c3a7..5368b41c9 100644
--- a/lib/msk144sim.f90
+++ b/lib/msk144sim.f90
@@ -5,6 +5,7 @@ program msk144sim
   real pings(0:NMAX-1)
   real waveform(0:NMAX-1)
   character arg*8,msg*22,msgsent*22,fname*40
+  character*512 encode_exe_file
   character*512 pchk_file
   character*512 ldpc_msg_file
   real wave(0:NMAX-1)              !Simulated received waveform
@@ -38,7 +39,8 @@ program msk144sim
   h=default_header(12000,NMAX)
 
   ichk=0
-  call genmsk144(msg,ichk,msgsent,itone,itype,pchk_file,ldpc_msg_file) 
+  encode_exe_file="./encode "
+  call genmsk144(msg,ichk,msgsent,itone,itype,pchk_file,ldpc_msg_file,encode_exe_file) 
   twopi=8.d0*atan(1.d0)
 
   nsym=144