diff --git a/lib/test_q65.f90 b/lib/test_q65.f90
index e2987d719..598de976f 100644
--- a/lib/test_q65.f90
+++ b/lib/test_q65.f90
@@ -73,7 +73,7 @@ program test_q65
 !                1         2         3         4         5         6         7
 !       1234567890123456789012345678901234567890123456789012345678901234567890123456'
   cmd1='q65sim   "K1ABC W9XYZ EN37      " A 1500  5.0  0.0   0.0  1  60  100   -10.0 > junk0'
-  cmd2='jt9 -3 -p  15 -L 300 -H 3000 -d   3 -b A -Q 3 -f 1500 *.wav > junk'
+  cmd2='jt9 -3 -p  15 -L 300 -H 3000 -d   3 -b A -Q 3 -f 1500 -X 32 *.wav > junk'
 
   write(cmd1(10:33),'(a)') '"'//msg//'"'
   cmd1(35:35)=csubmode