diff --git a/modules/aerodyn/src/AirfoilInfo.f90 b/modules/aerodyn/src/AirfoilInfo.f90
index 4b7cb26c4a..c4bf351136 100644
--- a/modules/aerodyn/src/AirfoilInfo.f90
+++ b/modules/aerodyn/src/AirfoilInfo.f90
@@ -663,7 +663,7 @@ SUBROUTINE ReadAFfile ( AFfile, NumCoefs, InCol_Alfa, InCol_Cl, InCol_Cd, InCol_
                   CALL SetErrStat( ErrStat2, ErrMsg2, ErrStat, ErrMsg, RoutineName )
                p%Table(iTable)%UA_BL%UACutout = p%Table(iTable)%UA_BL%UACutout*D2R
 
-               CALL ParseVarWDefault ( FileInfo, CurLine, 'filtCutOff', p%Table(iTable)%UA_BL%filtCutOff, 0.5_ReKi, ErrStat2, ErrMsg2, UnEc )
+               CALL ParseVarWDefault ( FileInfo, CurLine, 'filtCutOff', p%Table(iTable)%UA_BL%filtCutOff, 20.0_ReKi, ErrStat2, ErrMsg2, UnEc )
                   CALL SetErrStat( ErrStat2, ErrMsg2, ErrStat, ErrMsg, RoutineName )
                   
                p%ColUAf = NumCoefs + 1 ! column for f_st
diff --git a/modules/aerodyn/src/UnsteadyAero.f90 b/modules/aerodyn/src/UnsteadyAero.f90
index f82ddb1cf8..c67987711b 100644
--- a/modules/aerodyn/src/UnsteadyAero.f90
+++ b/modules/aerodyn/src/UnsteadyAero.f90
@@ -411,7 +411,7 @@ subroutine ComputeKelvinChain( i, j, u, p, xd, OtherState, misc, AFInfo, KC, BL_
    ! This filter is a Simple Infinite Impulse Response Filter
    ! See https://en.wikipedia.org/wiki/Low-pass_filter#Simple_infinite_impulse_response_filter
    
-   dynamicFilterCutoffHz = max( 1.0_ReKi, u%U ) * BL_p%filtCutOff / PI / p%C(i,j)
+   dynamicFilterCutoffHz = BL_p%filtCutOff !max( 1.0_ReKi, u%U ) * BL_p%filtCutOff / PI / p%C(i,j)
    LowPassConst  =  exp(-2.0_ReKi*PI*p%dt*dynamicFilterCutoffHz) ! from Eqn 1.8 [7]
    
    KC%alpha_filt_cur = LowPassConst*alpha_filt_minus1 + (1.0_ReKi-LowPassConst)*u%alpha ! from eq 1.8 [1: typo in documentation, though]