diff --git a/lib_dec/ivas_stereo_mdct_core_dec_fx.c b/lib_dec/ivas_stereo_mdct_core_dec_fx.c
index 5ad8ef7e4670bbba77ef167265174d4b6694166f..66e01228b3ac6ed417c10287e8d1edbe96e59334 100644
--- a/lib_dec/ivas_stereo_mdct_core_dec_fx.c
+++ b/lib_dec/ivas_stereo_mdct_core_dec_fx.c
@@ -388,7 +388,7 @@ void stereo_mdct_core_dec_fx(
             st = sts[ch];
             FOR( k = 0; k < nSubframes[ch]; k++ )
             {
-                sns_interpolate_scalefactors_fx( sns_int_scf_fx, Aq_fx_32[ch], DEC );
+                sns_interpolate_scalefactors_fx( sns_int_scf_fx, &Aq_fx_32[ch][k * M], DEC );
 
                 IF( st->hTonalMDCTConc != NULL && EQ_16( add( k, 1 ), nSubframes[ch] ) )
                 {