diff --git a/lib/qra/q65/q65.f90 b/lib/qra/q65/q65.f90
index a54807e9c..d9086ade9 100644
--- a/lib/qra/q65/q65.f90
+++ b/lib/qra/q65/q65.f90
@@ -95,7 +95,8 @@ subroutine q65_dec0(iavg,nutc,iwave,ntrperiod,nfqso,ntol,ndepth,lclearave,  &
   ftol=ntol
   ia=ntol/df
   ia2=max(ia,10*mode_q65,nint(100.0/df))
-  nsmo=int(0.7*mode_q65*mode_q65)
+!  nsmo=int(0.7*mode_q65*mode_q65)
+  nsmo=int(0.5*mode_q65*mode_q65)
   if(nsmo.lt.1) nsmo=1
   if(first) then                         !Generate the sync vector
      sync=-22.0/63.0                     !Sync tone OFF