diff --git a/lib_enc/ivas_ism_param_enc.c b/lib_enc/ivas_ism_param_enc.c
index 3169962f50970a32ff501b135766ea6da13223fd..1430607d63c1a7d7f103bf877c38327641aae61a 100644
--- a/lib_enc/ivas_ism_param_enc.c
+++ b/lib_enc/ivas_ism_param_enc.c
@@ -374,8 +374,8 @@ void ivas_param_ism_stereo_dmx_fx(
     tmp_1 = W_norm( ene_data );
     tmp_2 = W_norm( ene_dmx );
     ene_data = W_shl( ene_data, tmp_1 );
-    ene_dmx = W_add( W_shl( ene_dmx, tmp_2 ), 1 );
-    dmx_gain = BASOP_Util_Divide3232_Scale( W_extract_h( ene_data ), W_extract_h( ene_dmx ), &dmx_gain_e );
+    ene_dmx = W_shl( ene_dmx, tmp_2 );
+    dmx_gain = BASOP_Util_Divide3232_Scale( W_extract_h( ene_data ), L_add_sat( W_extract_h( ene_dmx ), 1 ), &dmx_gain_e );
     dmx_gain_e = sub( dmx_gain_e, sub( tmp_1, tmp_2 ) );
     dmx_gain = Sqrt16( dmx_gain, &dmx_gain_e );