diff --git a/modules/aerodyn/src/UnsteadyAero.f90 b/modules/aerodyn/src/UnsteadyAero.f90
index e76ee6c1fd..daad36dda0 100644
--- a/modules/aerodyn/src/UnsteadyAero.f90
+++ b/modules/aerodyn/src/UnsteadyAero.f90
@@ -2307,9 +2307,9 @@ subroutine UA_UpdateStates( i, j, t, n, u, uTimes, p, x, xd, OtherState, AFInfo,
          call SetErrStat(ErrStat2, ErrMsg2, ErrStat, ErrMsg, RoutineName)
 
       ! update states to value at t+dt:
-      call UA_ABM4( i, j, t, n, u, utimes, p, x, OtherState, AFInfo, m, ErrStat2, ErrMsg2 )
-      !call UA_BDF2( i, j, t, n, u_interp, p, x, OtherState, AFInfo, m, ErrStat2, ErrMsg2 )
-      !   call SetErrStat(ErrStat2, ErrMsg2, ErrStat, ErrMsg, RoutineName)
+      !call UA_ABM4( i, j, t, n, u, utimes, p, x, OtherState, AFInfo, m, ErrStat2, ErrMsg2 )
+      call UA_BDF2( i, j, t, n, u_interp, p, x, OtherState, AFInfo, m, ErrStat2, ErrMsg2 )
+         call SetErrStat(ErrStat2, ErrMsg2, ErrStat, ErrMsg, RoutineName)
 
       if (.not. p%ShedEffect) then
          ! Safety