diff --git a/modules/openfast-library/src/FAST_Solver.f90 b/modules/openfast-library/src/FAST_Solver.f90
index 10056965c1..036117f180 100644
--- a/modules/openfast-library/src/FAST_Solver.f90
+++ b/modules/openfast-library/src/FAST_Solver.f90
@@ -607,6 +607,7 @@ SUBROUTINE AD_InputSolve_IfW( p_FAST, u_AD, y_IfW, y_OpFM, ErrStat, ErrMsg )
       end if
       
       if (u_AD%rotors(1)%NacelleMotion%NNodes > 0) then
+!        for cfd we will lump the hub and nacelle together
          u_AD%rotors(1)%InflowOnNacelle(1) = y_OpFM%u(1)
          u_AD%rotors(1)%InflowOnNacelle(2) = y_OpFM%v(1)
          u_AD%rotors(1)%InflowOnNacelle(3) = y_OpFM%w(1)