diff --git a/lib_dec/acelp_core_dec_ivas_fx.c b/lib_dec/acelp_core_dec_ivas_fx.c
index e9e4625ced77e3912baec981923c64eb3be27251..712a3339f4ad0d1a8f0e3fcdc8ec8eadcfd2e302 100644
--- a/lib_dec/acelp_core_dec_ivas_fx.c
+++ b/lib_dec/acelp_core_dec_ivas_fx.c
@@ -749,7 +749,7 @@ ivas_error acelp_core_dec_ivas_fx(
             {
                 Rescale_exc( st->hMusicPF->dct_post_old_exc_fx, exc_fx, bwe_exc_fx, st->hGSCDec->last_exc_dct_in_fx, st->L_frame,
 #ifdef FIX_ISSUE_1291
-                             shr( imult1616( st->L_frame, HIBND_ACB_L_FAC_Q1 ), 1 ), 0, &( st->Q_exc ), st->Q_subfr, NULL, 0, INACTIVE );
+                             L_FRAME32k, 0, &( st->Q_exc ), st->Q_subfr, NULL, 0, INACTIVE );
 #else
                              imult1616( st->L_frame, HIBND_ACB_L_FAC ), 0, &( st->Q_exc ), st->Q_subfr, NULL, 0, INACTIVE );
 #endif
@@ -803,7 +803,7 @@ ivas_error acelp_core_dec_ivas_fx(
             Copy( syn1_fx + st->L_frame - L_SYN_MEM_CLAS_ESTIM, st->mem_syn_clas_estim_fx, L_SYN_MEM_CLAS_ESTIM );
 
             /* save and delay synthesis to be used by SWB BWE */
-            Copy_Scale_sig( syn1_fx, temp_buf_fx, st->L_frame, sub( -1, st->Q_syn ) ); // Q_syn
+            Copy_Scale_sig( syn1_fx, temp_buf_fx, st->L_frame, sub( -1, st->Q_syn ) ); // Q_syn -> Q(-1)
             IF( st->hBWE_FD != NULL )
             {
 #ifdef FIX_ISSUE_1290