diff --git a/lib_dec/hq_core_dec_fx.c b/lib_dec/hq_core_dec_fx.c
index cc047f9d047b2645e7657a804848982921f02301..a087641731c140700183cd222670bfdc16abf605 100644
--- a/lib_dec/hq_core_dec_fx.c
+++ b/lib_dec/hq_core_dec_fx.c
@@ -1098,6 +1098,7 @@ void ivas_hq_core_dec_fx(
             IF( EQ_16( st_fx->bfi, 1 ) && GE_16( output_frame, L_FRAME16k ) )
             {
                 /* PHASE_ECU active */
+                Scale_sig32( t_audio_q, L_FRAME48k_EXT, sub( Q15, Q_audio ) );
                 Q_audio = 15;
                 move16();
                 window_ola_fx( t_audio_q, synth, &Q_audio, hHQ_core->old_out_fx, &hHQ_core->Q_old_wtda, output_frame,